Rocket Tom – this is one where I would recommend getting a specialist in too (not me, I don’t mix work with cycling so I’m not touting for business, just don’t tell my boss I’m missing an opportunity ha!)
Looking at the pic there are a few things to question – how old is the boiler – does it have asbestos ropes, gaskets, loose fill insulation? What is the boarding (you are concerned about)? Is that textured coating or paper on the wall (textured coating may be asbestos containing), does the boiler have a flue, what’s the ceiling, and one that is rarely considered, but not improbable in an older residential property – are the pipes lagged beneath floor level/is there loose fill insulation and are you likely to disturb it.
It may just be a timber panel/relatively modern boiler/unlagged pipes, nothing to worry about….but then it may not be and, if you do have AIB there or even thermal insulation it would make a right royal mess if it isn’t dealt with properly. A boiler contractor has a legal responsibility to comply with the Control of Asbestos Regulations 2012 even when working in a residential property, so your boiler man should be aware of this. However, I would say at least 50% have no idea of their own responsibilities under CAR2012 and a good deal that understand the law flout it anyway because customers just don’t want to know. Educate yourself and grill them about the asbestos factor if you do decide to leave it to the boiler operative to decide what to do!
Out of interest, where are you based, how old is the property and boiler?