Lord Sugar: 'Kirstie Allsopp is a lying cow'

Lord Alan Sugar has hit back at claims by Kirstie Allsopp that his behaviour to production staff on The Apprentice is "shockingly uncharitable".

The presenter made the claims on Twitter earlier this week, but the businessman also took to the microblogging service to strongly deny the allegations. He also slammed her performance on Sport Relief Does The Apprentice.

Allsopp wrote: "Being asked whether I follow Alan Sugar. I worked with him on Sport Relief Does The Apprentice. His behaviour was shockingly uncharitable.

"There r words I don't use, but when it comes to Sugar & his treatment of the staff & crew involved..in any other work place he'd be Fired (sic)!!"

Lord Sugar wrote on his Twitter page: "what a Lying cow @KirstieMAllsopp was worst contestant in celeb Apprentice ever having hissy fit all time very rude to Jacki Gold (sic).

"bloody cheek @KirstieMAllsopp was in celeb Apprentice claims I was uncharitable lying cow, she was useless.

"more lies from @KirstieMAllsopp said I was hard on and rude to production people in celeb Apprentice, she is too far up Emma Freud ar.."

He then directed a tweet directly at the Location, Location, Location host, saying: "@KirstieMAllsopp you are liar dont tweet lies about me by the way you were the worst celeb ever in celeb Apprentice."

Lord Sugar recently admitted that he was "reluctant" to use Twitter.