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Prime Minister, First Lord of the Treasury and Minister for the Civil Service
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1979-90
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Leader of the Conservative Party
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1975-90
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Leader of Her Majesty's Official Opposition
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1975-79
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Shadow Secretary of State
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1974-75
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Secretary of State for Education and Science
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1970-74
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Shadow Secretary of State
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1969-70
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Shadow Secretary of State
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1968-69
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Shadow Secretary of State
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1967-68
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Parliamentary Secretary (Ministry of Pensions and Insurance)
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1961-64
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