Paul, in NZ, the days of the Tradesman taking his rubbish away with him and the Customer providing tea & scones at morning tea, are over.
I'm surprised that Appliance Stores in the UK still deliver & connect appliances for free.
Do range circuits in the UK have to be protected by RCCB ?
As Trumpy mentioned, here in NZ, ranges don't have to be protected by an RCCB. Same for water heaters and fridges. I think this is wrong as these appliances pose significant risk of electric shock. And if they are functioning properly, they shouldn't trip an RCCB.
" In an ideal world " : Electrical appliances would be delivered and installed by a licensed electrician.
