The main contribution one can make as a student to one’s country in peace or wartime is to study hard and effectively. But we all also tried to do something more directly. For my part, I would serve one or two evenings a week at the Forces canteen in Carfax. British soldiers and American airmen from the nearby bases at Upper Heyford were among our main customers. It was hot, sticky and very hard on the feet, but also good fun, with plenty of company and wisecracking humour.

Reports of the D-day landings in July 1944, though, brought both apprehension and anxiety. The deadly struggle on those exposed beaches made us deeply uneasy. For perhaps the only time I wondered whether I was right to be at Oxford.

In fact we were now within a year of the end of the war in Europe. There were still the Battle of the Bulge and the tragedy of Arnhem to come. But slowly the emphasis came to be on preparing for peace. And among the peacetime activities which began to take an increasing amount of my time was politics.

Almost as soon as I came up to Oxford I had joined the Oxford University Conservative Association (OUCA), which was founded in the 1920s under the inspiration of a don at Christ Church – Keith Feiling, the historian of the Tory Party and later biographer of Neville Chamberlain. Although the national agreement to suspend party political electoral contests for the duration of the war had no direct implications for politics at the universities, in practice political life in Oxford was a good deal quieter than it had been in the 1930s. But, for all that, OUCA activities quickly became a focus for my life. In those days the Oxford Union, in which star speakers would come to debate issues of the highest importance as well as ones of unbelievable triviality, did not admit women to its membership, though I used sometimes to listen to debates. But I would never have excelled in the kind of brilliant, brittle repartee which the Union seemed to encourage. I preferred the more serious forensic style of our discussions in OUCA and of the real hustings. OUCA also provided a further network of acquaintance and friendship. It was, indeed, an effective forum for matchmaking, as a number of my OUCA colleagues demonstrated.

Oxford politics was a nursery for talent. I made friends in university politics who, as in the novels of Anthony Powell, kept reappearing in my life as the years passed by. Much the closest was Edward Boyle who, though he moved easily in a sophisticated social and political world which I had only glimpsed, shared with me a serious interest in politics. At this time Edward, the wealthy and cultivated son of a Liberal MP, was himself a classical liberal whose views chimed in pretty well with my own provincial middle-class conservatism. Although we were later to diverge politically, we remained dear friends until his tragically early death from cancer.

William Rees-Mogg, whom I knew in my final year, was a distinguished editor of The Times from a very early age. I was never as close to William as I was to Edward, but one sensed that he was marked out for higher things.

Robin Day was a prominent Liberal. Like Edward he was a leading light in the Oxford Union, and we later met as lawyers in the same chambers. One sometimes wondered what career would be open to the brilliant wits of the Union, until Robin Day invented a new one by pioneering television interviewing – after which our paths and our swords crossed frequently.

Another star was Tony Benn, at that time still rattling his full complement of syllables as the Hon. Anthony Wedgwood Benn. From start to finish he and I have rarely agreed on anything, but he was always a courteous and effective debater, an English patriot, and as time has made socialism more and more a thing of the past, even a traditional figure. But perhaps we enjoy a sympathy based on our religious roots. When Tony became President of the Union I was invited to a celebration, attended by his father Viscount Stansgate, which, true to Tony’s Nonconformist principles, was teetotal.

Kenneth Harris was another leading debater, who along with Edward Boyle and Tony Benn spent several months touring the United States giving demonstration debates. He subsequently had a distinguished career in political journalism. We met again many times, notably when he wrote my biography.

As an officer in OUCA I was naturally taken up with the 1945 general election campaign. In Oxford I was busy campaigning for the city’s MP Quintin Hogg until term ended, when I returned to Grantham to work for Squadron Leader Worth in his attempt to dislodge the sitting Independent Member, Denis Kendall.

In retrospect, we should all have known what to expect. By some mysterious but inexorable law, wars always seem to advance state control and those who advocate it. My husband Denis’s view was that in the services people from totally different backgrounds mix in an unprecedented way and that the result is an acute twinge of social conscience and a demand for the state to step in and ameliorate social conditions. But, in any case, the Conservatives had done uniformly badly in the limited number of wartime electoral contests, and there was a general tendency for our share of the vote to fall. Nobody paid much attention to opinion polls then: but they too told the same story. As I have noted, the Left were extremely effective after Dunkirk in portraying the Conservatives as exclusively responsible for appeasement, and managed to distance Churchill from the party he led. Nor did people remember that Labour had opposed even the limited rearmament carried out by Baldwin and Chamberlain.

But there were also other influences at work. The command economy required in wartime conditions had habituated many people to an essentially socialist mentality. Within the Armed Forces it was common knowledge that left-wing intellectuals had exerted a powerful influence through the Army Education Corps, which as Nigel Birch observed was ‘the only regiment with a general election among its battle honours’. At home, broadcasters like J.B. Priestley gave a comfortable yet idealistic gloss to social progress in a left-wing direction. It is also true that Conservatives, with Churchill in the lead, were so preoccupied with the urgent imperatives of war that much domestic policy, and in particular the drawing up of the agenda for peace, fell largely to the socialists in the Coalition Government. Churchill himself would have liked to continue the National Government at least until Japan had been beaten and, in the light of the fast-growing threat from the Soviet Union, perhaps beyond then. But the Labour Party understandably wished to come into its own collectivist inheritance.

In 1945, therefore, we Conservatives found ourselves confronting two serious and insuperable problems. First, the Labour Party had us fighting on their ground and were always able to outbid us. Churchill had been talking about post-war ‘reconstruction’ for some two years, and as part of that programme Rab Butler’s Education Act was on the Statute Book. Further, our manifesto committed us to the so-called ‘full employment’ policy of the 1944 Employment White Paper, a massive house-building programme, most of the proposals for National Insurance benefits made by the great Liberal social reformer Lord Beveridge and a comprehensive National Health Service. Moreover, we were not able effectively to take the credit (so far as this was in any case appropriate to the Conservative Party) for victory, let alone to castigate Labour for its irresponsibility and extremism, because Attlee and his colleagues had worked cheek by jowl with the Conservatives in government since 1940. In any event, the war effort had involved the whole population.

I vividly remember sitting in the student common room in Somerville listening to Churchill’s famous (or notorious) election broadcast to the effect that socialism would require ‘some sort of Gestapo’ to enforce it, and thinking, ‘He’s gone too far.’ However logically unassailable the connection between socialism and coercion was, in our present circumstances the line would not be credible. I knew from political argument on similar lines at an election meeting in Oxford what the riposte would be: ‘Who’s run the country when Mr Churchill’s been away? Mr Attlee.’ And such, I found, was the reaction now.

Back in Grantham, I was one of the ‘warm-up’ speakers for the Conservative candidate at village meetings. In those days, many more people turned out to public meetings than today, and they expected their money’s worth. I would frequently be speaking at half a dozen meetings an evening. Looking back at the reports in the local newspapers of what I said at the time, there is little with which I would disagree now. Germany must be disarmed and brought to justice. There must be co-operation with America and (somewhat less realistically) with the Soviet Union. The British Empire, the most important community of peoples that the world had ever known, must never be dismembered. (Perhaps not very realistic either – but my view of Britain’s imperial future was not uncommon in the aftermath of victory.) The main argument I advanced for voting Conservative was that by doing so we would keep Winston Churchill in charge of our foreign policy. And perhaps if Churchill had been able to see through the July 1945 Potsdam Conference the post-war world might have looked a little different.

Like many other members of OUCA, I had received lessons in public speaking from Conservative Central Office’s Mrs Stella Gatehouse. Her emphasis was on simplicity and clarity of expression and as little jargon as possible. In fact, at election meetings, when you never knew how long you would have to speak before the candidate arrived, a touch more long-windedness would have been very useful. Most valuable of all for me personally, however, was the experience of having to think on my feet when answering questions from a good-humoured but critical audience. I recall a point made by an elderly man at one such meeting that had a lasting effect on my views about welfare: ‘Just because I’ve saved a little bit of money of my own, “Assistance” won’t help me. If I’d spent everything, they would.’ It was an early warning of the hard choices that the new Welfare State would shortly place before politicians.

Three weeks after polling day, by which time the overseas and service votes had been returned, I went to the election count at Sleaford. As we waited for the Grantham result, news trickled in of what was happening elsewhere. It was bad, and it became worse – a Labour landslide with Tory Cabinet ministers falling one after the other. Then our own candidate lost too. I simply could not understand how the electorate could do this to Churchill. On my way back home I met a friend, someone who I had always thought was a staunch Conservative, and said how shocked I was by the terrible news. He said he thought the news was rather good. Incomprehension deepened. At the time I felt that the British electorate’s treatment of the man who more than anyone else secured their liberty was shameful. But was it not Edmund Burke who said: ‘A perfect democracy is the most shameless thing in the world’? In retrospect, the election of the 1945–51 Labour Government seems the logical fulfilment of the collectivist spirit that came to dominate wartime Britain. It was to be about thirty-five years before this collectivism would run its course – shaping and distorting British society in the process, before it collapsed in 1979’s Winter of Discontent.

At the time, it was clear to everyone that fundamental reassessment of Conservative principles and policies was required. We felt this as much in Oxford as anywhere else. It lay behind the preparation of a report of the OUCA Policy Sub-Committee which I co-authored in Michaelmas term 1945 with Michael Kinchin-Smith and Stanley Moss. The report contained no more profound insights than any other Tory undergraduate paper. And its two themes we have heard many times since – more policy research and better presentation.

Perhaps the main problem as regards what we would now call the ‘image’ of the Conservative Party was that we seemed to have lost our way and our policies seemed to be devised for the wealthy rather than for ordinary people. As our OUCA paper put it: ‘Conservative policy has come to mean in the eyes of the public little more than a series of administrative solutions to particular problems, correlated in certain fields by a few unreasoning prejudices and the selfish interests of the moneyed classes.’ The accusation was, of course, unfair. If the Conservatives had won in 1945 we would still have had a Welfare State – doubtless with less immediate public expenditure and certainly with greater scope for private and voluntary initiative. But the idea that Conservatism was simply that – conserving the interests of the status quo against change and reform – was immensely powerful at this time.

In March 1946 I became Treasurer of OUCA and later that month went as one of the Oxford representatives to the Federation of University Conservative and Unionist Associations (FUCUA) Conference at the Waldorf Hotel in London. It was my first such conference and I enjoyed it hugely. When I spoke it was in support of more involvement by people from working-class backgrounds in university Conservative politics. I felt that we had to get away from the perception of Conservatism as stuffy and frivolous. It was not so much that I wanted a classless society, as the socialists (somewhat disingenuously) said they did, but rather that I could not see that class was important. Everyone had something unique to offer in life and their responsibility was to develop those gifts – and heroes come from all backgrounds. As I put it to the FUCUA Conference: ‘We have heard all about this being the age of the common man – but do not forget the need for the uncommon man.’ Or, I suppose I might have added, ‘woman’.

In October 1946 I was elected President of OUCA – the third woman to hold the position. I had done my final exams that summer and was now beginning the research project which constituted the fourth and last year of the Chemistry degree, so I had a little more time to spend on politics. For example, I attended my first Conservative Party Conference, held that year in Blackpool. I was entranced. So often in Grantham and in Oxford it had felt unusual to be a Conservative. Now suddenly I was with hundreds of other people who believed as I did and who shared my insatiable appetite for talking politics.

The Conference had a most extraordinary atmosphere. From my humble position as a ‘representative’, I had the sense that the Party leadership – with the notable exception of the Party Leader – had arrived at Blackpool prepared to reconcile itself and Conservatism to the permanence of socialism in Britain. A perceptive observer of the 1946 Conference, Bertrand de Jouvenal, wrote of our Front Bench: ‘These great, intelligent thoroughbreds, trained from their earliest years to prudent administration and courteous debate, were in their hearts not far from accepting as definitive their electoral defeat in 1945.’*

This was decidedly not what the rank and file wanted to hear. Indeed, there was open dissent from the floor. A request on the first day for a general debate on questions of philosophy and policy was refused by the chairman. There was a lukewarm reaction to the consensus approach of speeches from the platform, though these became notably tougher the longer the Conference went on, as Shadow ministers perceived our discontent. My instincts were with the rank and file, though I had not yet fully digested the strong intellectual case against collectivism, as I was to do in the next few years.

Back in Oxford I had organized a very full programme of speakers. Lord Dunglass (Alec Douglas-Home) urged support for Ernest Bevin’s foreign policy – support we readily gave. Bob Boothby – a wonderful speaker, with great style – declaimed against the ‘revolutionary totalitarian absolutism of Moscow’. David Maxwell-Fyfe, whose daughter Pamela was at Oxford at the time, attacked nationalization and urged a property-owning democracy. Peter Thorneycroft put forward what seemed the very advanced views of the ‘Tory Reform’ wing in a debate with the University Labour Club at the Union. Lady (Mimi) Davidson told us how it felt to be the only Conservative woman Member of the House of Commons. Anthony Eden charmed and impressed us all over sherry. Each term we had a lively debate with the other political clubs at the Oxford Union, particularly the Labour Club, which at the time was very left wing and included some famous names like Anthony Crosland – who even in those days could condescend to a Duchess – and Tony Benn. Generally, however, OUCA met in the Taylorian Institute on a Friday evening, entertaining the speaker to dinner beforehand at the Randolph Hotel. So it was there that I first rubbed shoulders with the great figures of the Tory Party.

The most powerful critique of socialist planning and the socialist state which I read at this time, and to which I have returned so often since, F.A. Hayek’s The Road to Serfdom, is dedicated famously ‘To the socialists of all parties’.

I cannot claim that I fully grasped the implications of Hayek’s little masterpiece at this time. It was only in the mid-1970s, when Hayek’s works were right at the top of the reading list given me by Keith Joseph, that I really came to grips with the ideas he put forward. Only then did I consider his arguments from the point of view of the kind of state Conservatives find congenial – a limited government under a rule of law – rather than from the point of view of the kind of state we must avoid – a socialist state where bureaucrats rule by discretion. At this stage it was the (to my mind) unanswerable criticisms of socialism in The Road to Serfdom which had an impact. Hayek saw that Nazism – national socialism – had its roots in nineteenth-century German social planning. He showed that intervention by the state in one area of the economy or society gave rise to almost irresistible pressures to extend planning further into other sectors. He alerted us to the profound, indeed revolutionary, implications of state planning for Western civilization as it had grown up over the centuries.

Nor did Hayek mince his words about the monopolistic tendencies of the planned society that professional groups and trade unions would inevitably seek to exploit. Each demand for security, whether of employment, income or social position, implied the exclusion from such benefits of those outside the particular privileged group – and would generate demands for countervailing privileges from the excluded groups. Eventually, in such a situation everyone will lose. Perhaps because he did not come from a British Conservative background and did not ever consider himself a Conservative at all, Hayek had none of the inhibitions which characterized the agonized social conscience of the English upper classes when it came to speaking bluntly about such things.

I was in Blackpool visiting my sister (who had gone there from the Birmingham Orthopaedic Hospital) when I learned from the radio news on that fateful 6 August 1945 that an atomic bomb had been dropped on Hiroshima. My academic study and the fascination exerted on me by issues relating to the practical application of science probably meant that I was better informed than most about the developments lying behind the manufacture of the atomic bomb. The following year I was able to read (and largely understand) the very full account contained in Atomic Energy for Military Purposes published by the United States. Yet – cliché as it may be – I was immediately aware on hearing the preliminary reports of Hiroshima that with the advent of the A-bomb ‘somehow the world had changed’. Or as Churchill himself would put it in his majestic memoirs The Second World War: ‘Here then was a speedy end to the Second World War, and perhaps to much else besides.’

The full scientific, strategic and political implications of the nuclear weapon would take some years to assess. But the direct human and environmental consequences of the use of atomic weapons were more quickly grasped. Yet neither on that first evening reflecting on the matter in the train home from Blackpool, nor later when I read accounts and saw the pictures of the overwhelming devastation, did I have any doubt about the rightness of the decision to use the bomb. I considered it justified primarily because it would avoid the losses inevitable if Allied forces were to take by assault the main islands of Japan. The Japanese still had 2½ million men under arms. We had already seen the fanatical resistance which they had put up during the Battle of Okinawa. Only the scale of the Allies’ technological military superiority, demonstrated first at Hiroshima and then at Nagasaki, could persuade the Japanese leadership that resistance was hopeless. And so one week after Hiroshima, and after a second bomb had been dropped on Nagasaki, the Japanese surrendered.

Britain had, of course, been closely involved in the development of the bomb, though because of the breakdown of Anglo-American nuclear cooperation after the war it was not till 1952 that we ourselves were able to explode one. Churchill and Truman, as we now know, were duped by Stalin at Potsdam when the American President ‘broke the news’ of the bomb to the Soviet leader, who knew about it already and promptly returned to Moscow to urge his own scientists to speed up their atomic programme. But the fact remains, as I used to remind the Soviets when I became Prime Minister, that the most persuasive proof of the essential benevolence of the United States was that in those few crucial years when it alone possessed the military means to enforce its will upon the world, it refrained from doing so.

The greatest transformation affecting Britain at the time – and the one which would have a great impact on my political life – was the change of the Soviet Union from comrade in arms to deadly enemy. It is important to stress how little understanding most people in the West had at this time of conditions within the USSR. I was never tempted to sympathize with communism. But my opposition to it was at this time more visceral than intellectual. It was much later that I thought and read more deeply about the communist system and saw precisely where its weaknesses and wickednesses lay. And it is interesting to note that when Hayek came to write a new preface to The Road to Serfdom in 1976 he, too, felt that he had ‘under-stressed the significance of the experience of communism in Russia’.

By the time I left Oxford with a second-class degree in Chemistry under my belt, I knew a great deal more about the world and particularly about the world of politics. My character had not changed; nor had my beliefs. But I had a clearer idea of where I stood in relation to other people, their ambitions and opinions. I had, in short, grown up. And I had discovered what I really wanted to do with my life.

Shortly before my university days came to an end I went back to Corby Glen, a village some ten miles from Grantham, to a dance. Afterwards a few of us gathered for coffee and a sandwich in the kitchen of the house where I was staying. Not unusually, I was talking about politics. Something I said, or perhaps the way I said it, prompted one of the men to remark: ‘What you really want to do is to be an MP, isn’t it?’ Almost without thinking I said: ‘Yes: that really is what I want to do.’ I had never said it before – not even to myself. When I went to bed that night I found that I had a lot on my mind.

* Problems of Socialist England (1947).