The Daily Star alleges the contestant is an ex-detective constable "who played a key role" on the Jimmy Savile abuse inquiry.
We are aware of reports concerning the proposed media appearance of a former detective constable.We have been in contact with Channel 5 and made them fully aware of potential risks and their responsibility to live investigations.
All officers joining the MPS and leaving the MPS are required to sign the Official Secrets Act.
More top news
The Blur frontman told a crowd in Denmark he would play on despite it being 4am but festival bosses had other ideas.
The ex-England and Arsenal footballer is bidding to replace Boris Johnson for the Tories.
Rain will be heavy across Scotland, parts of northern England and Wales tonight - rumbles of thunder are possible waking some of us up.