MasterChef producers have appointed a law firm to investigate allegations of misconduct against host Gregg Wallace, following reports of inappropriate behavior from 13 individuals over a 17-year period. Wallace has stepped back from presenting duties and is cooperating with the investigation, while denying any claims of sexual harassment. The law firm Lewis Silkin, known for its expertise in high-profile workplace investigations, will lead the probe, emphasizing sensitivity and confidentiality for those providing evidence.