The Green Party will announce who will replace Caroline Lucas MP as leader later.
The Brighton Pavilion MP announced she would be standing down as leader earlier this year to make way for a new generation of activists to enter parliament.
The 51-year-old will continue to serve her Sussex constituency.
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Thursday's weather for the west of the region
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Foreign Office Minister Tobias Ellwood has been praised after attempting to save the life of the police officer killed in New Palace Yard.