ORdered on a thursday, received the next tuesday with little to no notification of when it would arrive, for £50 delivery this isn't good, other sellers were doing names day deliveries for this price. Overall they were cheaper but sent me a completely different (cheaper) brand product and not the celotex I ordered. While they maintain that they are 'essentially' the same, when you're building something to a tight spec 'essentially the same' isn't good enough. Luckily I could use these slabs in the project, but for the awful communication, selling me goods different to those I ordered and a complete lack of customer service department (cant get through on the phone) I would never recommend these people who are just middle men between big distributers and you.