The London Marathon will definitely go ahead this weekend - but security is being scrutinised, after explosions near the finish line of Tuesday's Boston Marathon killed at least three people and wounded more than 100.
Security for the iconic race in London will be reviewed after the two fatal explosions at the finish line of the event in Boston.
London's Metropolitan Police say a security plan was in place for London's race but will be reviewed, while London Marathon chief executive Nick Patel says the event won't be cancelled.
The Met added that the blasts would not affect security for Baroness Thatcher's funeral in central London on Wednesday night.
Britain's double Olympic champion Mo Farah is one of 36,000 runners set to compete in the London race, which starts at Greenwich Park and winds through some of the city's iconic landmarks including Tower Bridge, Canary Wharf and Big Ben, before finishing at the Mall.
