Depending on the boiler the spark might not be able do the work legally.
Your original installer has had his nose put out of joint, but could argue that he can't commission his work because someone else has interfered with it.
The second guy is able to argue he didn't install the boiler.
I agree though that the first guy is being a bit of a wimp - although I can see his point of view.
Better organisation next time methinks.
What do you mean 're the Electrician not being able to do that legally? Who will do that then?
To be fair it was organised, I can't think how I could have been any clearer about what was what but for whatever reason the plumber didn't engage his brain about various things and seemed to think it was smart to pass the wiring bit over to the Electrician (when he wasn't there of course!)
Being naive I thought this was ok as it was wiring afterall.
My mistake was trusting a plumber would do what he was paid to do and not cut corners and also not to have delayed making payment until I had spoke to the Electrician and checked all other works in minute detail.
Thanks Lisa