SEE The Face Of London Marathon Runner Who Died Three Miles From Finish Line

David Seath, an Afghanistan veteran and Green Beret, suffered a cardiac arrest around the 23-mile mark of the annual race. He fell in Upper Thames Street, near Southwark Bridge, and was rushed to St Thomas' Hospital by paramedics but died shortly afterwards.

Mr Seath's friends are planning on walking the final three miles of the race in honour of his memory.

"Today we heard the tragic news that our friend Dave Seath passed away whilst taking part in the 2016 Virgin London Marathon. He was three miles short of the finish line and collapsed on Upper Thames Street. His friends and colleagues are planning to complete what he started, in his honour. We will walk as one, the final three miles of the marathon, starting where he fell. We're raising money for Help for Heroes, a cause he ran and died for. He was our friend and hero’, his friends wrote on a website.