Hundreds of people were at Cribbs Causeway to greet celebrities Gary Barlow, Chris Evans, James May and Brian Cox.
The four set off from Lands End early this morning in a pink Rolls Royce. They're heading to John O'Groats to raise money for Breast Cancer Care.
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A blustery start to the day will be followed by rain as the morning progresses.
A wet and windy start for many areas, with some heavy rain at times.
Cloud will thicken and rain will strengthen in the early hours, creating a blustery night.