Selected athletes: Tom Aggar, Maidenhead; Nick Beighton, Yateley; Sam Scowen, Wokingham; Pamela Relph, Aylesbury; Lily Van den Broecke, (cox) Oxford.
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Friday night's forecast for the east of the region
Friday night's forecast for the west of the region
ITV News worked with fire fighters to test the flammability of several costumes