He was elected Member of Parliament for Mitcham in 1950 and served there until 1974 when the seat was merged and he moved to Carshalton. In Edward Heath's government he served as Secretary of State for Employment and was responsible for the Industrial Relations Act 1971, which balanced the introduction of compensation for unfair dismissal with curbs on the freedom to strike and the virual abolition of closed shop agreements.
In 1971 he escaped injury when the Angry Brigade anarchist group exploded two bombs outside his house.
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