Andy Gray's return to football commentary on British television has been overshadowed by the leaking of a new video showing alleged sexist behaviour by him and co-presenter Richard Keys.

Gray was sacked by Sky in 2011 after tapes surfaced showing him making sexist remarks about female linesman Sian Massey and towards a colleague, Charlotte Jackson. Keys then resigned.

Gray made a return to British TV last weekend as a guest commentator for BT Sport in its coverage of the FA Cup tie between Stevenage and Everton.

Now a previously unseen clip has emerged on website The Football Ramble, showing the pair chanting "Get your t**s out" at Sky's touchline reporter Clare Tomlinson, apparently during the early 2000s.

BT Sport has refused to comment over whether it will hire Gray again, but a statement from the broadcaster said: "Andy Gray made a guest appearance last weekend and we were happy with his commentary."

It is not known how the video surfaced, but a source at Sky said: “We recognised this as an issue three years ago and we dealt with it.”

Keys and Gray have recently been working for Qatar-owned broadcaster BeInSport fronting their live Premier League coverage.Keys referred briefly to the latest row on Twitter, saying only: “It’s pathetic.”

In 2011, Keys blamed “dark forces” for forcing the pair out of Sky.