They refused to provide the Jockey Club with a list of customers who backed the winner Drumstick in the race in which Man Mood was pulled up when odds-on favourite.

David Hood, head of public relations, said: “We are very comfortable with how the programme portrayed us. It was very cleverly edited and took certain issues out of context. If William Hill is guilty of absolutely anything it is protecting our clients.

“We have been fully compliant with Jockey Club inquiries to the maximum of our ability. They appreciate that and yet the programme makers were unhelpful in their reluctance to understand that process.”