This is only my opinion based on my experience!
If you want to go alone you must be in the mind set of giving it all you have got!
Having your own ltd company costs money to start and to run so if you are going to run the two jobs together you will probably not make any real profit unless they are good jobs!
Lets take my company for example: Ltd company.
Accountant fees ( final year books ) first year ÂŁ2000
Book keeping fees ( everyday/month ) paid girlfriend in kind! will cost you if you don’t do it yourself.
Niceic etc ÂŁ500 per year
ÂŁ 2000000 Liability insurance. ÂŁ1000 per year
Office set up ÂŁ500
company secretary (not the one who answers phone) perhaps included in accountant fees.
Van ???
Van insurance???
Own tools???
Don’t get me wrong here, there is nothing better that going on your own but it is a lot of work. If you do small jobs its better to join one of the schemes like niceic so you don’t have to pay BC near £200 for each notifiable job. But it comes at a price too.
Just remember when you go on your own you become the electrician, the secretary, the QS, the book keeper, the sales team, the debt collector, the designer, the quotation expert, etc etc.I know my accounting bill was high but in the first year I was a little in over my head so many phone calls regarding vat etc.
Perhaps a sole trader is better option at first. But remember that there are greater personal risks with that option.
If you do go on your own "Go Hard!" Good luck!