Police have appealed for information over a pair of "dangerous" men, after a shop keep was shot in the chest on Halloween. Investigating officer Detective Sergeant Gary Ferguson, of the Met's Flying Squad, said:
These men are dangerous and we need to find them urgently.
Although suspect one tried to cover up, you can see most of his face in the CCTV footage. His face is distinctive. We are sure that someone who knows this man would recognise him from the CCTV. Take a good hard look at his face - do you know him?
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The plaque at number 16 Cowley Street in Westminster marks the brown brick Georgian townhouse where Sir John lived for 31 years.
A man reportedly armed with several knives has been arrested in Whitehall on suspicion of planning a terror attack, police have said.
Metropolitan Police officer, Tom Harrison, has been crawling the course since the race began on Sunday morning.