So interestingly today the LibDems, Greens and Plaid announced their remain alliance. Dulwich and West Norwood was one of the seats. So the LibDems are stepping aside here to give the Greens a free run.
Camberwell and Peckham (Harriet Harman) may not even need one. If she wins the contest to be the new speaker, convention dictates that other main parties won't run against her.