Can't honestly recommend.
The quote for the slabbing included hardcore for the shed base. Two hard-working lads were doing the job under the occasional supervision of James. I noticed that no hard core was being laid, but as it happened the development site manager was passing and asked if everything was okay. I asked if it was okay to lay the base on sand and cement and he said that it should be. The ground seems quite compact anyway. Some additional slabbing to the side of the house was done prior to this and seemed fine and this has been a boon as hard standing instead of the miry grass.. The base seemed fine and I negotiated a discount as there had been no hardcore laid even though James had himself said that it was needed when he gave me the quote. But I noticed that on the otherwise level base one slab seemed to be standing a couple of millimetres proud and one had dipped about the same. James said that he would pop back and sort it and hang a gate for me. Despite several messages he did not. Fortunately it was not a problem for the shed installers, who also came back and installed the gate. If they were on Trustpilot I would give them a glowing review. I have only given 2 stars because I don't care for take the money and forget it companies.