Lol..... I have indeed been given conflicting advice, I have also been given incorrect advice and when challenged they have had to back track but that's another story.
Lets put our brains in gear here for a moment. what other avenues do you know of for an unregistered installation to get registered once its been found to not to have been in the first place?
For it to be compliant it will need to be registered even after the event. even applying for a retrospective building conditions approval or via a section 36 notice they will require a person certified to check it for safety and correct installation, given the general constraints on building depts. do you think they would go to the trouble of an enforcement route when it can be commissioned and then registered to 'regularise' it.
The following is taken from the Governments own planning portal site. I have highlighted underlined in bold the expected general response.
Given the response from GS in my example it would be in accord with the expected response for the local BC dept. in that 'regularising' the situation is the safe thing to do but only the person 'post commissioning' it can make the statement that the installation, having inspected it is in accord with the building control requirements.
Failure to comply with the Building Regulations
If you do not follow the building control procedures set out for handling your building work or you carry out building work which does not comply with the requirements contained in the Building Regulations you will have contravened the Regulations.
Prosecution and enforcement notices
A local authority has a general duty to enforce the Building Regulations in its area and will seek to do so by informal means wherever possible. If informal enforcement does not achieve compliance with the Regulations the local authority has two formal enforcement powers which it may use in appropriate cases.
First, if a person carrying out building work contravenes the Building Regulations, the local authority may prosecute them in the Magistrates' Court where an unlimited fine may be imposed (sections 35 and 35A of the Building Act 1984). Prosecution is possible up to two years after the completion of the offending work. This action will usually be taken against the person carrying out the work (builder, installer or main contractor).
Alternatively, or in addition, the local authority may serve an enforcement notice on the building owner requiring alteration or removal of work which contravenes the regulations (section 36 of the 1984 Act). If the owner does not comply with the notice the local authority has the power to undertake the work itself and recover the costs of doing so from the owner.
A section 36 enforcement notice cannot be served on you after the expiration of 12 months from the date of completion of the building work. A local authority also cannot take enforcement action under section 36 if the work which you have carried out is in accordance with your full plans application which the authority approved or failed to reject.
Tony
Why would you consider that removing a boiler and re-fixing it would in any way make it more safe? when you service or do a landlords cert you are in effect commissioning an appliance. to be clear you are [or should] be checking all parameters required to ensure the safe operation and set up as per the manufacturers requirements.
You are not required to take it off the wall! the flue should also be inspect-able in any event, it does not in itself require disassembly! If any of the tested inspected parameters are not as expected then of course remedial work / action would be required.
but you crack on and do as you think fit...