I assume that you would be looking at a hob rated at 13 A and an oven, also rated at 13 A, that plugs into a separate socket.
An oven that takes a 13 A feed is no problem. Ovens rarely take much more and limiting to 13 A just slows the warm-up down a bit. Obviously you have to buy and oven that is rated to 13 A or comes with a normal plug.
I'm in two minds about a 13 A feed to an induction hob. In theory, it could be very limiting, as they are are often 2 kW for each larger ring, and maybe 1.5 kW for a small ring, so limiting to 13 A or 3 kW total seems like it would be a problem. However, my sister-in-law has an induction hob with just a 13 A plug and it's fine.