Two lanes are closed and there is queueing traffic on the M25 clockwise between Junction 5 for the M26 / A21 and Junction 6 for the A22 / B2235. Lanes two and three are closed and there are tailbacks to Junction 5.
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Celebrities including Chris Evans and Joanna Lumley are expected to attend the event marking 50 years since the broadcaster went on air
Tuesday morning's weather for the west of the region
Tuesday morning's weather for the east of the region