Seddons now employs a handful of consultants who have no basic salary, instead taking home a portion of the money they bring in.
Other firms, including Davenport Lyons and Keystone Law, are understood to include a significant commission element in contracts for new hires.
Seddons managing partner Robin Austin said: “I don’t think you can afford to just pay someone a high basic salary without any assurance that they can cut it.”
A number of Seddons partners are also on commission-heavy packages.
West End-based Cramer Pelmont employs all of its seven partners on a commission-only basis. They earn between 40 and 50 per cent of what they bill and can hire associates using income from clients.
Cramer Pelmont managing director Alex Brassey said: “The only people that come here are those with genuine followings.”