why would you want to go `limited` when just starting out?....you go limited...then see if you can get finance.....no chance!!....
your best bet here is to firstly make sure that you have the relevent books (BGB and the OSG1st)...you will need the memerandum of guidance of the electricity at work regs.....a PDF download....either an MFT or seperates...your choice ..as long as they can carry out the relevent tests.....you will need current callibration certs for these.....an approved voltage indicator to GS38 together with a known source of supply (either a proving unit or the incoming side of a DP incomer is classed as a known source of supply)...obviously the tools to carry out works....drivers and snips...all VDE of course......relevent knowledge.....public liability ...£2,000,000 minimum....this will cost in the region of £75...£100 for a years cover......you need a job to show em....a C/U change is sufficiant here....
Better to go with elecsa....and i`l tell you why....
NIC require that the job used for the purposes of the assessment is registered with LABC first....so you can safely add about £180-£220 for that...
Elecsa on the other hand are of the opinion that you just notify the assessment job through them.....once you have been accepted onto their scheme....saving you £££££...friendly and easy to deal with n all.....