Allen's fight with Lucas Browne and Chisora's clash with Senad Gashi are the two major events in the capital.
There are no titles on the line in these match-ups, although the winners of both get in the mix for future heavyweight world championship fights.
Dereck Chisora lost on his last visit to the O2, defeated by Dillian Whyte in December.
But the Londoner hopes to regain the winning feeling tonight.
"The O2 brings a lot of memories and disappointments, but it's part of boxing," he said.
"One minute you're jumping on the ropes, the next minute lying under the ropes.
"This fight for me is a great fight for me, I'm excited for this fight, I'm looking forward to this fight. New coach, new skills, will be incredible.
"I'm motivated, I do not travel for three hours on the train, every four days because I'm not motivated.
"I want to fight, I love to fight and if he comes to fight we will fight. I do not care, what he wants to do, we will.
"Big fights are available.I think you have the big four at the top, but really and truly, the big four at the top do not want to fight each other, so what can you tell us, at the bottom of the scrap will only take you, the ".
Sam Hyde Beats Jozef Jurko – TKO, round 1
Sam Cox Beats Georgi Georgiev – points, 40-37
John Harding Jr Beats Miroslav Juna – points, 60-54
Shannon Courtenay Beats Roz Mari Silyanova – points 40-36
Easy enough for Courtenay, but she does not seem satisfied with her performance. It was not possible to find this knockout blow and was taken away.
Nikita Ababiy Beats Dimitri Faltin – TKO, round 2
The American has a lot of power. Send Faitlin down with a powerful right and the referee decides that's it!
Conor Benn Beats Josef Zahradnik – points, 80-71
Benn controls most of the fight and puts Zahradnik in the seventh with a powerful kick in the body. He can not finish it within the distance, but the decision is made.
Joe Cordina Beats Andy Townend – TKO, round 6
Cordina knocked over Townend, who kept trying to get up. The referee waves at the end of the sixth.
Josh Kelly vs. Przemyslaw Runowski
Dereck Chisora vs. Senad Gashi
Dave Allen vs. Lucas Browne