Wimpey is still perceived as a &“box basher&” by some London land agents. But George Wimpey Central London, the firm&’s fledgling capital city operation, is out to change that view. Ben Roskrow talks to managing director Graeme DoddsWhen Peter Johnson took over as Wimpey group chief executive 18 months ago, he signalled a new start for the UK&’s biggest housebuilder. …