Yeah i was hoping it'd be a bit cheaper, I did get an itemised quote and it does include putting in a 6 way CU, 6x double sockets, 1x 16amp commando socket for my welder in the garage and connecting up 4x strip lights i already have so that's a fair bit of work before you even get to the EV charger install so maybe its not that bad in the end.
The garage is a bit away from the house as well so i need 30m of 10mm SWA which isn't cheap.
Supply, install, and secure 10mm SWA cable using cleats.
Run Cat6 cable through customer-supplied ducting.
Terminate SWA cable into existing consumer unit.
Gland and earth both ends of SWA armouring.
Install 50A MCB to serve as a designated sub-main circuit.
Fit and mount a backboard for the garage consumer unit.
Supply and install a 6–7 way consumer unit complete with SPD and 4x RCBOs for designated circuits.
Supply, wire, and install a 16A socket.
Wire and install EV charger point (EV charger to be supplied by customer).
Supply, wire, and install 6x double sockets (including 1 existing socket location).
Connect existing lighting circuit into new garage consumer unit.