We chanced upon the 66 Book Club on Twitter. It’s a huge warehouse in Hemel that opens once a month to sell books at a large discount.
On the day we visited all books were 70% off, with kids’ books a whopping 80% discounted. There’s a huge selection, and definitely one to visit when buying Christmas pressies. Membership is £2, and you can pay with your first purchase (they take credit/debit cards)
The warehouse/converted offices can be a bit tricky to find: they’re at 66 Wood Lane End. Here’s a map.
Next book club is 8-9 October.