Check a new kitchen circuit

I am installing a new ring circuit for a small kitchen and would like to just check that the plan is ok? We have a single oven below 2kw so to power it I am planning to spur an isolation switch off off the ring. Other than that's it's a pretty standard small circuit. I will get a qualified spark to check and connect it to the mains supply but before I do I want to just check this is ok? I've used 2.5mm 3 core cable and sleeved the Earth's in each socket. I've installed conduit in the wall to run to the sockets in the wall that will be under tiles. Some of the sockets such as for the extractor fan will be wall mounted and I am planning to protect the cable with PVC channel. Many thanks