The current electrical regs ( NFC 15-100) which apply to new build or renovation where a planning application was submitted after 01/06/2003, require a 32 A feed to the kitchen as well as 3 x 16 A "dedicated circuits" for large appliances.
If there was already an electrical supply in situ, there would have been no need to contact the electricity supply bodies about the works and therefore , whether or not the regs were followed would be down to the professionalism or conscientiousness of whoever carried out the work.
Really, however, the only circumstances where I would think there wouldn't be a suitable feed would be if the previous owners cooked with bottled gas ( fairly common in the countryside ), didn't intend changing and therefore didn't bother with the 32 A feed
I'm sorry, but I still don't understand the bit about the earth - not a sparky, you see.
There is no discretion. The same regs specify an "appropriate earth" is required, give the required pass/fail resistance and where a new supply is required, this is tested before connection.
HTH