London Marathon runner dies after collapsing near mile 23

David Seath was fundraising for Help for Heroes at London Marathon when he collapsed (Image: JustGiving)

Popular David Seath has died after collapsing during yesterday's London Marathon. 31-year-old Seath, who was an army captain, was taking part in the event to fundraise for Help for Heroes when he suffered a suspected cardiac arrest on Upper Thames Street. Medical services rushed to support him and rushed him to nearby St Thomas' Hospital, but he was pronounced dead shortly afterwards.

Captain Seath, originally from Cowdenbeath in Fife, Scotland had earned two Masters degrees from the University of Aberdeen before completing army training at Sandhurst in 2010. He worked as a Fire Support Team Commander with the 29 Commando Regiment Royal Artillery. Prior to his death, Seath had raised over £500 for Help for Heroes. The day before the race, Seath wrote on his JustGiving page 'A big thank you to everyone that has been so generous and sponsoring me for tomorrow. I am sure H4H will be equally as appreciative. Every penny counts and to have broken the £200 mark with your help is very special. Thank you all so much.'

Friends of Seath have set up a JustGiving page and are now planning to complete the course in his honour, saying 'We will walk as one, the final three miles of the marathon, starting where he fell.'

David's mother Libby Seath said: 'David has achieved more in 31 years than most people do in 70. He lived his life on the edge and to the full. He was running to raise money for Help the Heroes, a cause which was very important to him.'

Lieutenant Colonel Jon Cresswell, Commanding Officer of 29 Commando Regiment Royal Artillery, paid tribute saying: 'The Regiment was devastated to learn of the tragic loss of Captain Dave Seath during 2016’s London Marathon. Dave was an outstanding commando officer, a natural leader and a true gentleman. He was my Assistant Adjutant and so I knew him very well. He served on operations in Helmand with 19th Regiment Royal Artillery before joining the Commando Gunners and earning his green beret.

'Witty, charming and polished, Dave was a fabulous host and stylish performer. As such he was the obvious choice to lead the Blue Peter Ten Tors team last year. Selected to train the future officers of the Afghan National Army later this year in the rank of major, Dave had a great career ahead of him. The thoughts of the Regiment are with Gabby and Dave’s family and friends at this tragic time. We have lost one of the great characters of our Regiment and take strength from the memory of his example and leadership.'