If you're after a big pool they don't come much cheaper than this! Amazon are selling this Bestway 10ft Swimming Pool Steel Pro MAX on back order for just £66! (Note: You need to select Amazon as the seller before you add to basket, as the listing is defaulting to the quickest delivery which is £110).
This is a large 10ft pool, with a strong steel frame, and it's quick and easy to set up. There's no pump or filter included, so you'll need to buy one separately to help keep the water clean.
This pool would normally set you back way over £100, so this is a super buy. Amazon have it on back order, with an estimated delivery date of 24th August, so it will be here in time for the August Bank Holiday weekend, or you could always store it away for next summer as it's such a bargain.
Just to note that some people have ordered with an expected delivery date of late August, and then received and email saying it would arrive sooner than that, with some being delivered tomorrow, so you may get it sooner than you think!