RevTime Easy-DIY Ultra Thick Interlocking Outdoor Rubber Tiles 20" x 20" x 1 3/4”, 45mm Thick for Playground, Outdoor Gym Floor, Sports Deck, Backyard Play Area (Pack of 2) Red : Amazon.co.uk:
Kids Eva Foam Play Area Soft Mats Interlocking Large Tiles Exercise Gym Outdoor | eBay
Interlocking Cushioned Flooring Tiles
Castleflex Rubber Interlocking Promenade Tiles (500mm x 500mm x 30mm) from £8.21