An Avon and Somerset Police spokesman said: "Two people have been arrested on suspicion of causing death by dangerous driving."
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Harry Brust was first prescribed the drugs to treat a skin condition as a child - but it led to him becoming addicted to heroin.
Low pressure will keep the weather cloudy and wet for many areas overnight.
The Treasury have confirmed the 1% cap on annual rises will stay despite earlier suggestions the policy could be scrapped.