Development Gains Tax Mr. Ridley asked the Chancellor of the Exchequer what has been the yield of the development gains tax up to the latest convenient date; and what has been the cost of collection. Mr. Robert Sheldon I would refer the hon. Gentleman to the replies I gave on 9th December 1974 to the hon. Member for Melton (Mr. Latham).—[Vol. 883, c. 42–3.]