An inquest into the death of Lance Corporal Craig Roberts is expected to open and close later. The soldier died alongside another soldier during the selection process for the SAS section of the TA on the Brecon Beacons in hot weather two weeks ago.
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There will be some patchy cloud, especially in the west later, and the chance of an odd shower, but in the sunshine it will feel pleasant.
A runner who carried a fellow athlete over the London Marathon finishing line claimed helping was "more important" to him than his time.
A service will be held on Sunday to mark the 70th anniversary of a maritime disaster in which 47 people died.