Thousands of people are packing the streets of St Pauls in Bristol for the carnival.
This year's procession is on the theme of Migration:
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Poultry and turkey farmers across the west have been ordered to keep their birds inside, to protect against a dangerous strain of bird flu.
The forming commander officer of Royal Marine Alexander Blackman has welcomed the decision to grant a fresh appeal in the case.
Police are appealing for witnesses after a man held up a shop in Exeter using a 10'' knife.