The BBC has been left embarrassed after a mix-up over plans for a Jeremy Clarkson-voiced sat-nav.

BBC Worldwide, the organisations commercial arm, had given TomTom the go-ahead for a sat-nav featuring the voice of Top Gear host Jeremy Clarkson.

Around 54,000 units were produced before the BBC's editorial policy team pointed out that Clarkson's role on Top Gear prohibited him from endorsing car-related products.

TomTom has been stopped from making more, but can sell the existing units at £189 each, with the BBC's share of the proceeds going to the Children In Need charity.

Under the conflict of interest section of the BBC’s editorial guidelines, presenters must take particular care not to endorse any product or service which could be covered in the programmes on which they work.

Clarkson was not involved in the deal, and didn't stand to make any money from it.