Free entry spots in the UK

The best things, as the saying goes. Not everything worth swimming in costs money, and some of the finest open water in the UK is entirely free — rivers, lochs, sea coves, tidal pools, reservoirs with informal access. No booking, no wristband, no day rate. That said, free access comes with responsibility: leave no trace, respect private land, be aware of conditions, and don't swim alone in unfamiliar water. The spots here have been chosen because the access is genuinely open and the swimming is genuinely good — not just because they happen to be free.