I have a 5 ring induction which was put in when I redid the kitchen a few years ago, the whole room was being rewired anyway but we had a big fat dedicated cable put in (I can’t remember the rating but its bigger than the oven cable and bigger than most cables for electric showers), that went to 2 RCD’s and from those when a fat wire to each side of the hob. The electrician was not happy to rewire the kitchen without some work to the consumer unit to bring it up to date (and it did not look that old).
So I would suggest that you will be replacing the consumer unit and running a fat cable to the hob with an RCD between the hob and consumer unit.
The induction hob is great though, it boils fast, really easy to clean and you can set the time when something will turn off – you want to cook your pasta for 11 minutes, set it for 11 minutes and after that it will beep and turn off. You also don’t need to turn them off – just take the pan off and it will turn off automatically (you have to remember this when you use someone gas hob though!)
I think ours has 8KW on one side and 10kw on the other. The 8KW is the 4 hob side and the 10Kw is a single beast of a ring (I think!)