You could get a tradesman who is registered under the 'competant persons' scheme. If they are s registered member of the right body they could do the work then certify their own work and submit it to the council on your behalf. https://www.gov.uk/competent-person-scheme-current-schemes-and-how-schemes-are-authorised#types-of-building-work
Got to love that there's a 'competant persons' scheme.
@user16171 started
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You could get a tradesman who is registered under the 'competant persons' scheme.
If they are s registered member of the right body they could do the work then certify their own work and submit it to the council on your behalf.
https://www.gov.uk/competent-person-scheme-current-schemes-and-how-schemes-are-authorised#types-of-building-work