A long-standing member of the London Assembly and former Lewisham councillor will not seek re-election next year.
Darren Johnson, who has been a Green Party assembly member for 16 years, has decided to step down along with Jenny Jones.
Mr Johnson also stood down as a councillor for Brockley last year, but his party managed to get another candidate elected for the ward - now the entire borough’s only non-Labour councillor.
He said: "By next May I will have served a 16 year stretch and look forward to handing over to a brand new Green Party team at City Hall.
"In spite of being a group of two on the assembly and in spite of the Assembly's limited powers, I'm immensely proud to have played a role in things like getting damaging roadbuilding plans scrapped, getting the UK's first ever same-sex partnership registration established, getting the London Living Wage established and getting cycling investment to figure seriously in Transport for London's budget."
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