British runner 'can't believe' what he saw in Boston

Some 347 of the 25,000 taking part in the race were British and several told of the aftermath of the two blasts.

Mike Kendall, from Northampton, tweeted after completing the 26.2 mile race:


My thoughts are with @bostonmarathon after explosions, 2 dead and 22 injuries after such a good day with volunteers, runners and crowds

Anthony Meenaghan, 21, an architectural technology student from Sheffield Hallam University who is on a work placement in Boston, tweeted


Thanks for all messages. I'm safe and well. Can't believe what I saw and heard. Sad day


Police boost ahead of marathon

The number of police officers on duty for the London Marathon has been boosted by 40% to provide reassurance in the wake of the atrocities in Boston according to Scotland Yard.