Former Tour de France winner Sir Bradley Wiggins is among the race favourites along with Nairo Quintana, second behind Britain's Chris Froome in this year's Tour.
This year's race starts on the Scottish Borders and will move through the Lake District, Snowdonia and Dartmoor before concluding with a showpiece finish in central London.
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A hearing found Kirsten Treasure guilty of 'shocking' catalogue of misconduct, including refusing to respond to a manslaughter crime scene.
Showers continue across some southern and western areas tonight.
Two people are being treated in hospital after an "explosion" in a flat in West Dunbartonshire.