12:52 am, Tue 16 Apr 2013
The head of crisis management department at the Foreign and Commonwealth Office has said a hotline number will remain open 24/7 to callers in the UK who are seeking information on loved ones in relation to the Boston bombings.
The main FCO number is 020 7008 1500.
10:53 pm, Mon 15 Apr 2013
The UK Consulate in Boston has tweeted contact information for anyone needing help after the marathon explosions:
10:26 pm, Mon 15 Apr 2013
Runner Darren Foy, 40, from Southampton and his wife Sandra and their two children missed the explosions by just 30 minutes after he finished the marathon in three and half hours.
Speaking from the city, the chartered surveyor said:
We were on our way home when we heard something had happened and I was getting messages like 'are you Ok?' which I never get. It's all quite shocking really.
We got home and we looked at the BBC online and saw there had been explosions but we are OK because I finished in three and a half hours and we were on the bus when it happened.
We are staying five miles outside and I'm not intending to go back into the city for a few days.
It's such a soft target. There are hundreds of thousands spectators on the streets and 27,000 runners, so we got off lightly.
10:24 pm, Mon 15 Apr 2013
Jez Hughes, a firefighter from Morley, West Yorkshire, had completed the marathon and was walking to the subway with his wife when they heard two explosions.
He had been standing only 100 yards from the finish line with other competitors but walked around the corner to meet his wife.
I had already finished and a few of us had congregated 100 yards past the finish line.
I was waiting for my wife as I had asked her to meet me there but she was in the family area.
Fortunately for me I went round the corner there to meet her.
While we were going to the subway we heard two explosions. I said straight away that sounds like a bomb and then we heard a second one.
We were a couple of blocks out of the way so it did not affect us.
This is my tenth marathon but this is my first time in the USA. I'm watching the aftermath on the TV now, which is a bit surreal to be honest.
My wife is very shook up.
Our condolences go out to those who have lost loved ones.
9:15 pm, Mon 15 Apr 2013
West Country (W)
A runner from North Devon who took part in the Boston Marathon says he escaped injury after two explosions on the race finishing line. Mark Jenkin, 34, from Barnstaple, completed the event in 2hrs 24 mins - less than half an hour before the two blasts rocked the area. More details
10:00 pm, Mon 15 Apr 2013
Google has set up a person finder website for those looking for people following the explosions at the Boston Marathon. Those with information about individuals can also leave information on the site.
9:58 pm, Mon 15 Apr 2013
Boston Police has issued a phone number for relatives concerned about runners taking part in the marathon.
The number to call from the UK is: 00 1 617 635 4500.
9:46 pm, Mon 15 Apr 2013
the Boston Marathon website 374 British and 108 Irish runners were due to take part in the race.
If you are concerned about a friend or relative
the site has a section where you can track the runners.
However due to the explosions, many runners may not have continued on the course.
8:59 pm, Mon 15 Apr 2013
The Boston Marathon website shows many British people were listed as taking part in the race.
The Boston Marathon website.
Credit: Boston Marathon
The site also provides a tracking system for runners, however due to the explosions many runners may not have continued on the course.
Read the latest news from Boston here