Building Regulations Compliance Certificate

[SweetWilliam]

The self-certification certificate states that "....the work was carried out in accordance with Gas Safety (Installation and Use) Regulations, as well as other relevant industry standards"

I would be very grateful to know what you think "other relevant industry standards" are, please?

Also, the certificate is issued by Ideal Boilers and authorised by Gas Safe Register, while it says that the Gas Safe Register takes no responsibility, it does not say that Ideal Boilers takes no responsibility (for, in this case, falsely issuing a certificate (whilst acknowledging that it has been self-certified) that is untrue). Your thought on this too please.
Cheers