Listed as “Private Island at Lakeside” on Airbnb.
This .2-acre private island (Lakeside Leisure Campsite) is located in a small lake in St Clears, Wales. The island is rented for camping only (there are no buildings) and can accommodate 8 campers. Guests must bring all supplies and tents. The island is accessed by a small footbridge.
For more information visit the Airbnb listing for this private island.
UPDATE 2020: This island is not currently listed on Airbnb. Check out a list of other private islands in the UK and private island rentals in Europe.