Dillian Whyte has announced he is no longer working with trainer Mark Tibbs as the heavyweight prepares for his fight with Alexander Povetkin on August 22.

Whyte will be in action on the fourth and final card of Matchroom's 'Fight Camp' schedule next month, with all events staged in the garden of promoter Eddie Hearn's house.

However, the 32-year-old will not have Tibbs working his corner when he takes on Russian Povetkin, revealing they have gone their separate ways in a post on Instagram.

"Just to let everyone know Mark Tibbs and I are no longer working together as boxer and trainer," Whyte – who is the interim WBC champion - wrote to go along with a picture of the pair.

"I'm training in Portugal, Mark has a young family, and his own new gym in the UK. As it stands it just hasn't worked out in the way we both hoped it would. 

"Mark came into my team four years ago and has helped me turn into the world-class fighter I am today.

"Mark is a great trainer and I will always be grateful to him and his dad for all they have done."

Whyte has a 27-1 record, his solitary defeat coming against long-time rival Anthony Joshua in December 2015, though he's won 11 on the spin since that setback.

He is waiting for a shot at the WBC title, as champion Tyson Fury is set to face Deontay Wilder – the man he dethroned thanks to a stoppage win earlier this year – in his next outing.