Ali and Bobby head off on the final leg of their British Isles tour to a lake in Essex, where they fly fish for trout. The main event follows at one of Britain's premier carp waters, Grenville in Cambridgeshire. The mission here is for Bobby to beat his UK carp PB - he must put in a man of the match performance to succeed. Daniel Clifford pays the boys a visit and sets his last bankside cooking challenge