UK] Ravensburger £4.99 (500) & £7.99 (1000) @TKMaxx (unsure how widespread, this store is in the North-East; worth popping up into Homesense to check for similar deals. ) : r/Jigsawpuzzles
RVSB4 Ravensburger UK 19383 Ravensburger Disney Carnival Multicha, 1000pc Jigsaw | eBay
Ravensburger UK 6958 Peppa Pig Jigsaw Puzzles. for sale online | eBay
1000 Piece Jigsaw - The Charity Shop - Toys Hobbies
Jigsaw Puzzles Direct - A huge range of jigsaws, jigsaw puzzles, mind puzzles and accessories for all ages that you can buy online.