Housebuilders continue to make steady progress as their latest trading updates reveal. Galliford Try is seeing "continued momentum" in the housebuilding market, particularly in the south of England. Over the six months to December 31 2012, its housebuilding arm achieved a "record" 1,364 units against 1,352 last year. Reporting on the six months ending January 31 2013, Bellway said its …