Not 100% sure why they changed the rules on kitchen wiring. Tech Council say it was to give more power to kitchen areas but I never had a problem, I'm sure most other sparks didn't either.
When I was wiring kitchens, it was always a 32A Ring, and sometimes (depending on size / diversity) I'd put in a 15A radial for the oven.
Rings are permissable elsewhere in the building.