There are no legal requirements for qualifications, certifications or memberships in such environments. Just general "be skilled enough to be safe"  admonishments in places like the Electricity at Work Regulations. But such things are useful to wave at prospective employers, clients and insurance companies to convince them that you're suitably competent. Or to show a jury if you ever got prosecuted.

is there a requirement to notify anyone such as building control for any works carried out? like there is in a dwelling?

thanks for the info and advice on this post and my previous mate, much appreciated. 

No, nothing in law. Well, in E&W - I'm not so familiar with Scotland or NI. Of course there might be a contractual obligation to notify a landlord or insurance company, but those are more likely to be obligations on the person ordering the work rather than the person doing the work.

No, nothing in law. Well, in E&W - I'm not so familiar with Scotland or NI. Of course there might be a contractual obligation to notify a landlord or insurance company, but those are more likely to be obligations on the person ordering the work rather than the person doing the work.

Awesome thanks again mate. I already had that feeling but i wanted to be definitely sure.

cheers!