A "big budget" pornographic film was shot in a London hospital when it hired out one of its wards to a film company.

The movie generated "substantial income" for the hospital, Conservative MP Penny Mordaunt said.

Ms Mordaunt, Portsmouth North MP, was speaking during a House of Commons debate on improving transparency in government accounting, on Monday.

NHS Kensington and Chelsea said the filming occurred before 2002 when the primary care trust (PCT) formed.

It was a big-budget affair and generated substantial income for the hospital Penny Mordaunt, MP, Portsmouth North Watch the debate: From BBC Democracy Live

"When I was director of Kensington and Chelsea Council, I discovered that one of our local hospitals was hiring out one of its closed - but fully-equipped - wards to a film company to use as a film set," Ms Mordaunt said.

"To add insult to injury, the movie was a pornographic one.

"Although I cannot claim to have seen the final picture - as I understand, these things are no longer claimable on parliamentary expenses - it was a big-budget affair and generated substantial income for the hospital."

"But apart from cheering up a few of the in-patients, it cannot be said to be contributing to the objectives of the primary care trust."

NHS Kensington and Chelsea said: "We can confirm this incident occurred some time prior to 2002 under a predecessor organisation's management and prior to the formation of PCTs."

Kensington and Chelsea Council has been contacted by BBC London but has not yet commented on the story.