With the cost of borrowing in the UK down to its lowest level since 1964 and mortgage rates falling below 5%, housebuilders erected good gains. Barratt Developments rose 8p to 328p, Bellway 9p to 395 1/2p, Berkeley Group 33p to 631p, Persimmon 7 1/2p to 312 1/2p, Wilson Bowden 25p to 720p and George Wimpey 6 1/4p to 185 1/2p. Scottish housebuilder Bett Bros jumped 29p to 260p, helped by good annual results.