Turns out the oven I was supplied with was actually an ADP4810 not the 4610. Whilst reading the manual, I noticed a reference to Belling so it’s obviously made by them, unless someone else makes their ovens.
Um, Belling went bust in the 90’s. The name is now owned by Glen Dimplex, who, like Diplomat/Hygena (MFI) don’t make anything – it’s all bought in and badged. Hope you’ve got a good one!