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Ms Mills and Ms Harding have been replaced by former England rugby player Ben Cohen and ex-EastEnders actor Joe Swash.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