Should the armour of an SWA carrying twin and earth cables also be earthed (with banjos etc)

[Rockingit]

Original contractor on contact flat refuses to come back and make good. Argument being if a spade went through the armour and then live would probably also go through earth too. Good we have regs to make such viewpoints irrelevant, however not sure what good they do if contractors can just ignore them. I spent £1760 in 2015 for that job, Small Claims Court?

Incidentally I had the wiring inspected a few years later and made the mistake of allowing the same contractor to do the inspection - marking his own homework.

Original contractor has glowing reviews on Checkatrade - so clearly can't trust that either.

Incidentally, when I emailed after the work was done requesting certification I realise that he did not supply any. I've had electricians in the past who have done this and thought standard practice. Again my mistake for not chasing up.

I assume said contractor is part of a Part P scheme (NICEIC, Napit, few others..) in which case complain to them. They'll investigate (in theory) and have the 'power' to insist the contractor makes good at their own cost. Nine years puts you out of scope for small claims (not that I'd bother with that anyway) but I think I'm right in saying (others will jump in here!) that the certsure guarantee is for ten so you're just in, if you're quick.

However.... if it's just a missing banjo, it's a ten minute job for an actual competent electrician so you might just want to get it done and not have the hassle and stress.