OP
Octopus
not an electrician. I am an electrical engineer with a BEng in Electronic & Electrical. I have C&G2391 , 17th edition etc etc. I have worked for 12 years in Oil and Gas offshore.
I am not trying to be an "electrician". I am looking at running an electrical business and will be employing "time-served" Sparks , so before you all start with the rants and raves about plastic sparks, that is not the case. I will be in a management role. Just doing some research just now on the domestic market as I have mainly and industrial background.
In which case you are going about this back to front. You need to establish what the market will pay, per hour inc VAT for such services, then allow for all your overheads and then see what's left - then you'll know what you can offer.
As a new business you won't have an established customer base, nor any reference sites and you'll be quoting against sole traders and established, well known businesses.
Think hard before taking the plunge.