Tesco 8ft Quick Up Pool £15 - Half price - perfect for this weather - fills itself ! Should be good when the sun shines though.
Free delivery to store
This 8ft wide pool is made of durable three-ply heavy gauge PVC and is easy to put up. Inflate the ring at the top of the pool and the pool sides will rise as it fills with water. The pool holds 608 gallons/2,300 litres of water.
Also - Tesco Out There Family Pool - same price - link in first post