Overview

• Polanski, a London Assembly member, beat MPs Adrian Ramsay and Ellie Chowns by 20,411 to 3,705 in a members’ ballot with about 37% turnout.
• He foregrounds wealth taxes, renationalising water companies and tighter business regulation as part of an explicitly eco‑populist programme.
• The party reports membership at roughly 68,500, crediting a surge of new joiners during the leadership contest.
• Polanski says he is open to talks with Jeremy Corbyn and Zarah Sultana’s new party, a prospect analysts say could pressure Labour by dividing left‑leaning voters.
• Positioning the Greens to challenge both Labour and Reform UK, he vows a more visible, combative communications approach while acknowledging he is not an MP.