I've been a few times early in the morning with some club mates before locks open so traffic is at the minimum, and swimming as a group means there are many pairs of eyes watching in case anyone turns up, the fact there is a speed limit of about 5mph means that if you do see anyone you should be fine too.
Be careful!
I've been a few times early in the morning with some club mates before locks open so traffic is at the minimum, and swimming as a group means there are many pairs of eyes watching in case anyone turns up, the fact there is a speed limit of about 5mph means that if you do see anyone you should be fine too.