The electrician said I can get the materials myself that's why I'm asking, I don't know if it's worth the potential stress, if the smaller things make up the £400 difference.
@MG201 the materials are £840 from the electrician, £400 if I get them (and they are chrome, not white as the electrician quoted). He said I could get my own materials so I was asking if the cable and stuff like that I don't know about as a consumer, might come to £400 or there about; in which case it's easier to let him get everything to save any hassle.
Also I don't play the lottery, what procedures would be in place? Should the electrician come back with no costs if something goes wrong in the future?
@SWD the smokes are instead of fire doors. I'm assuming any warranty wouldn't include labour fees?