Just had a skim-read back through some of this...
TBH I think you need to stop and reconsider exactly what it is you are hoping to achive...
and have you got a water-tight case to achieve what you want???
Because from the bits I have read I am not convinced there is an abundance of evidence in your favour...
Maybe I've missed something.. dunno...
but heres my reasoning.
1/ Is there actually a clear proven immediate danger due to poor work...?
or its it just some "non-hazardous" shoddy work.????
There can be plenty of work that does not comply with BS7671..
but that does NOT mean it is an immediate danger!!
(and you can't be prosecuted for untidy work.)
2/ Is there a paper trail of letters, quotes, contracts, electrical certificates, invoices, complaints letters & replies etc..
Detailing an unambiguous schedule of work that both yourself and the contractor agreed to..?
I would suggest that it is common knowledge that loads of consumer guidance, sites, programs, books etc.. ALL recommend getting multiple written quotes before agreeing to any substantial home improvement work...
Although verbal agreements are still an acceptable legal contract.. They are more difficult to prove!!
If a customer is daft enough not to get any form of written agreement then they are asking for trouble...
And if something did go to court, it could well be determined as a 50/50 liabilty..
So neither party pays anything to the other..
But they still both have to cover their legal costs!
I get the impression most of it has been word-of-mouth agreements??
3/ If you are planning to try the media route...
Then stop and think what the TV / Radio / Press are looking for..
A good story to attract readers/viewers/listeners..
Their prime concern is not actually resolving your problem...
it is about boosting their ratings!!!!!
They will receive 1000's of similar complaints every year...
and if they are considering getting involved in your complaint, they will be looking for a good paper trail of evidence to back-up the story...
Otherwise they stand the risk of counter claim by the contractor for something like slander, liable or deformation of character / buisness...
4/ Irrespective of what trade you are talking about...
If bad work has been complained about the original contractor should be given opportunity to put right any mistakes.... (thought I read somewhere that you have not allowed the original guy back???)
And there is always more than one way to wire a property...
5 different electricians may all adopt different installation methods..
But is does not mean that 1 is right and 4 are wrong...
All 5 could still be right!!!
5/ The contractor saying he'll take you to court is probably following the exactly same advice that has been given on this forum numerous times about non-paying customers...
Send then a CCJ letter for the amount owed!
So as I said at the start..
What exactly is the final outcome you are aiming for.....?
How much will that cost... Time / effort / hassle & money...
If you don't have a cast-iron case...
what are the risks if you lose any legal battle....?
You have to balance that against cutting your losses and just getting the job finished by another contractor!
Sorry if thats not very positive or hopeful from your perspective ...
Obviously you have more detail than we can see on the forum...
But from what I have read I don't think it is all 100% in your favour!
:coffee