Since the initial days of training courses for mediators in Britain in the 1990s, mediation as a practice in the UK has boomed. It tends, however, to be a field dominated by men. At least half the people entering the legal profession and receiving mediation qualifications each year are women. Yet they represent fewer than a third of the most advanced working mediators in Britain, according to the non-profit Centre for Effective Dispute Resolution. Corporate lawyers estimate that at least half of cases that go as far as issuing a claim involve mediation. But when it comes to selecting who does the work, "people tend to go to those with long histories in the law,"notes Tony Willis, a mediator with Brick Court Chambers in London.