everything about our purchase from marks electrical seemed efficient. it took longer than we thought-and had been told- to get the fitting (one week delay by me included) and the booking was inefficient - with multiple phone calls to book, and multiple identical safety phone checks. The actual fitting was one of the worst household events ive ever known. the workmen left all the doors open on a cold day - I seemed to spend all day trying to keep them shut..... they treated our house like a building site - which they owned! firstly they weren't going to fit the cooker because it was under a recessed window. this was checked, and they started. they then did tests - which they said showed a gas leak - and eventually turned off and condemned our boiler - making me sign forms and sticking labels on it.... the next day I got a very efficient and polite Corgi engineer (costing me £144.00) to check the system - as I didn't trust the fitters- and it passed fully with no adjustment, and no advisories! The boiler was safe and we'd had a very cold and worrying night! they did fit the cooker, and left the house with it working and both ovens going to burn them off.... BUT they had scratched the side of the range (it doesn't show in place as its on the side and I didn't see it til later). they didn't level the cooker, which was raised at the front - and only 3 of the 8 legs even touching the ground - so i had to correct this myself. They didn't leave a gap of one cm at the sides as in the manual (and there was no restriction at one end as i'd removed a unit), and because of this and because it wasn't levelled, part of one side of the frame was in contact with the wooden unit next to it, and its blistered the recently painted paintwork onto the front of the unit. I signed to say it was done, but I didn't check levels, or the gap (should you have to?). The whole thing was unsatisfactory, and I'd never use them again. Additionally I had to spend £144.00 above their fitting costs to get the gas supply and boiler checked by a competent Corgi registered supplier. It was a bad experience.....