An accident on the M25 between junction 5 and 6 is causing tailbacks. Delays affecting the M26 too.
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Your pictures: Lightning strikes over Oxfordshire
Samson the miniature steam train has re-entered service, on the Romney Hythe and Dymchurch railway, Kent's mainline in miniature.
Kenyans Eliud Kipchoge and Vivian Cheruiyot won the men's and women's races respectively, in a scorching hot London Marathon.