Tasty morsel Does anybody actually make their fortune out of retirement housing? The answer to that long-running question is being answered in the leafy, well-tended lanes of Oxfordshire around the Wallingford HQ of Beechcroft Developments. When Wimpey grabbed Laing last year, Beechcroft was one of the tasty morsels left on Laing books - and Greenfield hears of a stampede among …