Harry Enfield To Kickstart Our Grand Canal Challenge! We're very excited to announce that Harry Enfield, British comedian, actor, writer and director is firing the ‘starting gun’ at Royal Brompton for our Grand Canal Challenge on 26 June! He will also be joining us and cycling the entire 26 mile route, which ends at Harefield. In case you missed it- Walk, run or cycle this marathon distance along the Grand Union Canal! A first for the Charity- join us on a journey between Royal Brompton Hospital and Harefield, using the Grand Union Canal for much of the way. Walk through Hyde Park, see some of London’s industrial past, and enjoy some beautiful countryside – ending up at The Old Orchard pub. Free refreshments are available en-route and complementary goody bags will be given to all participants at the end in Harefield. Full details and booking information can be found here.