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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Analysis of queues found drivers faced 1.35 million traffic jams, costing them in wasted time, fuel and unnecessary carbon emissions.
Wednesday's forecast for the west of the region from Holly.
Holly has the forecast for the east of the region.