"Leisure" Dual Fuel Range Cooker (Wideopen NE13)

I'm posting this for an elderly relative who has recently moved into a new house and wants to replace this cooker for a smaller all-electric model. The cooker is currently connected to the electricity and gas supplies in the house and will need to be disconnected by someone who knows what they are doing. We can organise the to be done by someone suitably qualified at the expense of the new owner.

The cooker seems to have three electric ovens (one fan assisted), though the top left one in the picture might just be a grill. It has four normal size gas rings and one very large one, suitable for large preserving pan, fish kettle etc. On the right side there is a large halogen hob. It looks as if this has various zones, but I'm not sure. At the moment the fuse blows when the halogen ring is turned on. I suspect that this is because of the fuse being inadequate for the supply required but it may have a fault requiring repair.

The stove has had very little use as the house was mostly left unoccupied by the previous owner.