I Purchased a cooker. They asked £100 for installation so I expected a competent experienced electrician. It was just one simple connection from the wall isolation box. They were able to further isolate the electricity supply using the switch by the fuse box. On delivery and inspection they refused to connect the cooker saying they are very strict about wiring and my older style connections did not meet their very strict requirements. My current cooker was connected a few years ago by another company with no issue. I have a full refund but advise unless you have a modern house A0 is not for you. I certainly will not buy from them again.