rubber ducks break bylaw?

in the village of bourton-on -the -water ,gloucs had a charity rubber duck race stopped by local police  due to ancient bylaw .locals placed bets as a 100 of these ducks floated down river to raise money for a motorbike delivery service for hospitals .but a few people complained about bikes being parked on village green but got in trouble due to a bylaw that states that the river windrush and the green cannot be used on sundays for fundraising activities so local police had to halt event.