The Green Party's new leader is attempting to lure supporters of Jeremy Corbyn's party into his own ranks.
Zack Polanski made a direct appeal to those who have signed up to Mr Corbyn's new movement - known as Your Party - to instead join the Greens.
Around 800,000 people are said to have signed up to Your Party since it was launched in July.
The movement is being fronted by both Mr Corbyn, the Islington North MP and ex-Labour leader, and Zarah Sultana, the Coventry South MP who recently quit Labour.
The election of Mr Polanski, dubbed an 'eco-populist', as Green leader this week sparked fresh speculation that he might join forces with Your Party in a bid for Left-wing unity.
