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The manual says that for a 230 V installation on a single phase (what would come from a plug) it will draw up to 32 A. It doesn't look like it has an option to limit the total power draw as some units do, so to get the most from it you would want to run a 32 A radial circuit back to the CU.
the previous oven wasnt on a plug but was hooked in with the induction hob directly
This sounds like a Not Good set up, it's good that this has been found. IANAE
The "Required Fuse" entry on the datasheet is what you need to look at. That's saying 16 A, and so you will need that wired in directly. There are definitely ovens made that go into 13A sockets (they'll be sold with a plug on the flex, rather than a bare end) but you're right that they probably won't do pyrolytic cleaning.