Charles Russell is facing growing pressure over its role advising the trust created to compensate the families of victims of the human form of mad cow disease, after it came in for criticism last week over its costs and for its making contested claims regarding the scheme.

Senior trusts lawyers have warned that the firm, which has been advising the vCJD Trust since 2002, is vulnerable to a complaint to the Law Society, after it emerged that the Department of Health (DoH) accused the firm of making “highly misleading” statements in a letter to families regarding the costs of its legal work.