Now in its third year, the headline event is a 20km race on the River Thames through London from Putney to Big Ben and the Houses of Parliament and back. Last year a ‘leisure fleet’ was introduced alongside the main race and this year they are planning bigger and better! The date (Sunday 23rd September) is apparently “99% likely” as it’s reliant on a closure of the Thames Barrier so there won’t be any tides to contend with for a change…