Police questioning a 38-year-old man on suspicion of killing a married couple in an alleged hit-and-run in Bristol have been granted more time.
The suspect, who has not been identified, handed himself in to police hours after Ross and Clare Simons were killed on Sunday.
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Five people have been killed and 40 injured after a car and knife attack in London on Wednesday.
A wet, wintry night in places with rain and hill snow slow to move away from southern Scotland and northern England.
The Westminster terror attack dominates the front pages of Thursday's newspapers.