Former Baker McKenzie London head Gary Senior's alleged misconduct was reported to the U.K. Solicitors Regulation Authority (SRA) in 2015, three years before the historical allegations emerged publicly, the hearing into the matter heard on Monday.

Senior's QC claimed that the matter had been reported to the SRA but did not detail by whom.

Earlier in the Solicitors Disciplinary Tribunal hearing on Monday, former Baker McKenzie London HR head Martin Blackburn referred to a letter he had sent to the SRA in 2015, alleging that his investigation into the matter had caused "much annoyance" to Senior and Paul Rawlinson, who succeeded Senior in the role of London managing partner in 2013.