Heather Mills joins The Jump's long list of injuries

Heather Mills has become the latest celebrity contestant to leave winter sports show The Jump after injuring her knee and thumb.

Sir Paul McCartney's ex-wife was among the favourites to win the Channel 4 series, but hobbled out of the semi-final after a crash during training.

Ms Mills was only called up as a replacement this year, having had to pull out of a previous series of the show due to injury.

She is the second celebrity to leave the Austria-based show this week, following former Girls Aloud singer Sarah Harding who ruptured a ligament.

The show's third series has been plagued by injuries.

Britain's most successful gymnast, Beth Tweddle, 30, needed neck surgery following a fall during training.

Former Olympic champion swimmer Rebecca Adlington, Holby City actress Tina Hobley, Made In Chelsea's Mark-Francis Vandelli and Olympic gold-winning medallist Linford Christie have already departed the contest.

Ms Mills and Ms Harding have been replaced by former England rugby player Ben Cohen and ex-EastEnders actor Joe Swash.

The final will be held next Sunday.