Oh hang on, I may have misunderstood - the oven and job were on a shared radial? That might be ok if it's got enough capacity and appropriate fuses. If it's on the kitchen ring then that's what sounds Not Good. IANAE etc etc
Yeah, CU is direct to an isolated switch for the hob, both oven and hob were wired into this, but AEG delivery men and our electrician said they couldnt put it back the same way with this oven
thanks! what a cockup by AO who installed our hob then..
now to figure out how to get power from CU to kitchen without ripping the house apart