Jim Davidson was reportedly arrested at Heathrow Airport as he returned to the UK to appear as a contestant on Celebrity Big Brother.
Channel 5 would not comment on his inclusion in the show, which returns to screens tomorrow evening. Programme chiefs are now believed to be making last-minute changes to the line-up.
Other figures who are said to be appearing include Frankie Dettori, X Factor star Rylan Clark and the model and actress Paula Hamilton.
A solicitor for the comedian Jim Davidson has said his client denies allegations against him following his arrest under Operation Yewtree.
It is being reported that the comedian Jim Davidson has been arrested under Operation Yewtree, the police probe into Jimmy Savile claims.