DEREK Chisora is eyeing up his toughest fight yet – to become a Reform UK mayor.

The British heavyweight is being urged by pals to run to be London Mayor.

The boxing star, 41, is close pals with Nigel Farage and campaigned for Brexit.

Friends reckon he could floor Labour in the capital.

If he entered the fray for City Hall, he would be the second boxer to stand for Reform.

Olympic medalist Luke Campbell was elected Mayor of Hull and East Yorkshire earlier this year.

An insider familiar with Chisora shared with The Sun on Sunday: “Derek has been a steadfast supporter of Nigel for many years, and they are frequently seen together at social gatherings. Nigel consistently shows up ringside for his matches.

“Friends of Derek are urging him to “do a Luke” and take on Labour at the next London election. 

“He has real personality and stands a good chance of winning if the Reform surge continues.” 

Chisora is just one bout short of his 50th fight – and then is expected to hang up his boxing gloves.

In the past, Derek has discussed his bond with Nigel Farage, stating: “I’m not knowledgeable about politics, but I believe prioritizing British citizens is essential.

“I became friends with Nigel and Nick Candy and campaigned for Brexit.”

But Chisora faces a battle to be picked by Reform to be their candidate for London Mayor.

Fellow Reform backer Celebrity SAS hardman Ant Middleton has said he wants the job.

Sadiq Khan is expected to step down as Labour London Mayor before the next election in 2028.

Possible contenders to replace him as Labour candidate include actor Idris Elba, Dragons’ Den star Deborah Meaden and Labour MP Dawn Butler.