Best LEGO Deals This Week - 18 September 2026
Inspector Thomas has had a productive week - twelve deals tracked, with a healthy number of them sitting at all-time lows. There's no budget tier this time around, but mid-range and premium are well covered, with savings ranging from a tenner on the Water Lilies up to £140 on a very tempting NINJAGO set.
75445 Anzellan Starship from the Star Wars™ theme is down to £39.98 - that's 38% off the £64.99 RRP and an all-time low. 11 retailers are tracking this one, and Costco has the best price. Nearly £25 off at an all-time low is a proper result - and having Costco as the lead retailer means the price is the real deal rather than a massaged "was" figure.
75328 The Mandalorian™ Helmet from the Star Wars™ theme is down to £39.99 - that's 33% off the £59.99 RRP. 9 retailers are tracking this one, and Currys has the best price. The helmet display sets always look better in person than in photos, and at £39.99 this is a tempting entry point for anyone who's been sitting on the fence about adding one to the shelf.
42227 Jeep® Wrangler Rubicon SUV from the Technic theme is down to £32.56 - that's 46% off the £59.99 RRP. 9 retailers are tracking this one, and Amazon has the best price. Nearly half price on a Technic set is hard to argue with. The Wrangler is a chunky, satisfying build and it looks properly rugged when you're done - a set well worth picking up at this price.
76452 Quality Quidditch™ Supplies & Ice Cream Parlour from the Harry Potter™ theme continues to hold at £49.99 - still 44% off the £89.99 RRP and still an all-time low. 11 retailers are tracking this one, and Very has the best price. We flagged this three weeks ago and it hasn't moved - if you missed it then, it's still very much there for the taking.
42221 NASA Artemis Space Launch System Rocket from the Technic theme is down to £39.49 - that's 28% off the £54.99 RRP and an all-time low. 10 retailers are tracking this one, and John Lewis has the best price. A rocket at an all-time low with John Lewis as the lead retailer - you can trust the price is genuine, and it's a solid pick for anyone with a soft spot for space.
Also worth a look this week
The 11505 Woodland Mushrooms (The Botanical Collection) is down to £48.99 at Amazon - 30% off the £69.99 RRP and an all-time low, tracked by 13 retailers. In LEGO® Icons, both the 11381 Jaguar E-Type and the 11382 Hubble Space Telescope have hit all-time lows: the E-Type is £109.99 (15% off £129.99) at Amazon from 12 retailers, whilst the Hubble is £94.99 (21% off £119.99) at Brickabrac from 11 retailers. Also at an all-time low, the 11511 Water Lilies (The Botanical Collection) comes in at £24.49 - 30% off £34.99 at Amazon - and with 14 retailers tracking it, this is the most widely-available deal of the week.
For the bigger purchases, the 71837 NINJAGO® City Workshops (NINJAGO®) is down to £179.99 at Smyths Toys - 44% off the £319.99 RRP and a £140 saving, though only 2 retailers are tracking it so it's worth acting quickly if a large NINJAGO set has been on your radar. The 10373 Mini Bonsai Trees (The Botanical Collection) is down to an all-time low of £37.99 - 31% off £54.99 at Amazon - again, only 2 retailers in on this one, so don't hang about. And finally, the 42236 Custom Garage Ford Mustang GT Car (Technic) closes out the week at an all-time low of £63.49 - 21% off the £79.99 RRP at Amazon, tracked by 10 retailers.
As always, prices can change quickly - check the individual set pages for the latest live prices before you buy.
Prices correct at time of writing. Add any of these sets to your watchlist to get notified when prices drop further.