As U.S. lawyers successfully derail the most modest changes to the Rule 5.4 prohibition on nonlawyer investment in law firms, see e.g., this Wisconsin Bar commentary, the Brits are going in an entirely different direction. The Legal Services Act of 2007 lifted the fee-splitting prohibition in the U.K., but it has taken five years to set up the necessary regulatory infrastructure to facilitate the opening of the legal market to nonlawyer investors.
The UK experience is bound to have a big influence on the U.S. debate because so much of the rhetoric on both sides is based on the alleged impact of the nonlawyers. Proponents argue that it will drive down costs, accelerate innovation, and improve access to justice. The critics, who so far have the upper hand, assert that investor profit motives will compromise lawyer independence, leading to the ruination of the profession.