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Quite agree with you The Builder, but can't see the solicitors agreeing to exchange next week when there's no hope of this being resolved with a certificate for weeks (according to Gas Safe). Was actually those solicitors who suggested next week to exchange, knowing full well those queries hadn't even been asked yet, or (as it turns out) the local searches being completed (which *should* be tomorrow).
I have now actually found the company who installed the boiler, they've changed their name a couple of times but they are still Worchester Bosch accredited. And I have spoken to them. They'll be getting back to me tomorrow, but I've since found the original quote from 2006 which includes "commissioning the boiler" (which, at the time, I naively took to mean switch on & make sure it's working properly !) & sent it to them, so we'll see what they say about that.
By the way, when I bought the house, my solicitor never asked for this "compliance certificate" for that boiler so how was I ever to know I needed one ? If I had, I'd have chased it up at the time, not blimin' weeks before we're s'posed to complete. Had a thought, a new boiler was fitted a couple of years ago, at a house I rent out. Don't ever remember this certificate being issued there ... best check THAT *when* I get a chance ...