70 years on from the 1956 Clean Air Act, will the Deputy Prime Minister now support a much needed update of this essential law.

The Clean Air Act 1956 was passed in response to the 1952 Great Smog of London. Measured from 2026, that is 70 years — the arithmetic and the date of the Act are correct.

▸ UK Parliament — Clean Air Act 1956

Checked Wed 1 Jul, 09:58 · Broadcast: PMQs: Prime Minister's Questions - 17 June 2026

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