We do a huge amount of overhead catenaries.
This one fails for several reasons.
Fixings should not be fitted to the top layers of brick
Fixings should be be affixed to mortar (especially not expansion fittings)
Fixings should not be in broken brickwork.
Uk power network are a little different though!
They won't work on private distribution networks anymore. They are in the process of subcontracting all the existing maintenance / repairs onto others.
Therefore you will need a contractor competent in private cable networks. PM me and I can...
Simple solution is to show them your full risk assessment for the job, the contact you had with the DNO before the work to check it was ok and wouldn't endanger you or others, and photos of the site before the work commenced correctly signed and laid out to prevent diggers Ect moving close to...
The job is probably more like 4 hours, once testing has taken place.
Have you got quotes from others? He may just not want the work. Where in london are you? £350 for half a days work may be the norm in some areas...
why on earth did he not use the CAT he had on site?
There is no excuse for incompetance and he's made himself liable for not taking appropiate precautions
One of the properties I manage isn't heated, we use the following solution:
All pipes are protected by trace heating
Water tanks have immersion heaters fitted - controlled by a frost stat and contactor. The system works brilliantly.
looking at it further I'd probably price it around 5-6k plus VAT depending on how good access will be around the building.
If they've got good recomendations go for them. Life isn't about going for the cheapest quote
with the amount of downlighters I'm not suprised.
I'd expect around 3k for a standard basic rewire, but with all the extras the prices sound more than reasonable.