A Birmingham MP who made a spoof video of David Cameron inviting voters to sleep with his wife has offered to take it off the internet.

Sion Simon (Lab Erdington) was criticised yesterday by Cabinet Minister Jack Straw over the film, in which he also invites viewers to take away one of Mr Cameron's children.

But he continues to insist he had done nothing wrong and describes the film as "funny".

As reported in The Birmingham Post yesterday, Conservative MPs have condemned the video but Mr Cameron's staff say he is not taking it seriously.

"If Sion Simon feels on reflection that he has made an error of judgment then that is up to him," a spokesman said.

In the film, broadcast on the internet, Mr Simon wears a baseball cap and T-shirt and calls himself "Dave".

He says: "Yo. My name's Dave, yeah? Thing is, I'm just like you. I've got the same worries, the same troubles, the same cares, the same trouble and strife.

"Want to sleep with my wife? That's cool. Come down, check it out, we'll sort it out. Safe."

He adds: "I've got two kids - kid one, kid two. You like them? Take one - that's cool."

The video, which is just over a minute long, appears on popular hosting website YouTube, and was posted by Black Country MP Tom Watson (Lab West Bromwich).

It is a send-up of the Tory leader's WebCameron project, for which he has been filmed talking in his kitchen while doing the washing-up.

Responding to criticisms from Conservative MPs, Mr Simon said: "I don't think it oversteps the mark at all. It is satire and it is funny.

"If David Cameron finds it offensive and asks me to take it down then I will take it down."

A Conservative spokesman said: "David Cameron has got other things to do than follow what Sion Simon is up to.

"If Sion Simon feels on reflection that he has made an error of judgment then that is up to him."

Peter Luff, Tory MP for Mid Worcestershire, said Mr Simon should be "thoroughly ashamed of himself".

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>> Watch the video here.