Once again the restaurants in the UK have been reviewed Which?
You have to travel 20+ miles from Swanage to find a restaurant which gets even the entry level of 1 out of 10: “capable cooking, with simple food combinations and clear flavours”.
The whole of Dorset gets 9 mentions. There are twice as many in Mayfair alone. Cornwall gets 28. That’s a good reason to favour Cornwall for your holidays if you are a rich Londoner.