I’ve recently moved a colony of bees from inner Bristol to a hill in the wilds of N Somerset. New queen last June, Buckfast, reputable supplier. The colony has previously been very quiet but they have now become quite aggressive - coming up to meet you as you approach across the field! They are with (but not close to) two other well behaved hives. Could the move have caused temporary aggression? They are queenright and taking in stores.