Richard Nerurkar and Peter Elliott will be following the elite race leaders on motorbikes.

BBC: SPORT | Athletics | The BBC at the London Marathon

Peter Elliott, of the Down's Syndrome Research Foundation, said the idea that there was a Critical Down Syndrome Region was too simplistic.

BBC: NEWS | Health | Down's syndrome theory shattered

Having been stuck in a snowy rut as others swept effortlessly past, I can appreciate a bit of what Tom Elliott must have felt as he learned of Peter Robinson's trip to the McKenna cup.

BBC: Peter Robinson takes the grandstand view