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Without seeing pictures of the damage its hard to tell, but if you found a local firm I would expect to page:
£350 - Replace and repaint N/S Wing
£300 - Sand and respray bonnet and F/S wing
£200 - Align N/S/F Door
£50 - Secure battery
£100 - New N/S headlamp/bracket and alignment
£150 - Weld front bumper and secure to N/S
£200 - Secure the replace wiring loom and wiring under battery tray
However as they have stated on the report its only wiring they cite as being dangerous. So your looking about £250 to fix the battery and wiring, the lamp alignment will be a MOT failure so that will need to be done as a minimum, depending on if the time actually opens without an issue and if there are any sharp parts on the wing, they wouldnt cause an issue on the MOT.
The picture doesnt look that bad too me, but its only after you start pulling it apart and checking for bare wires you can see likely fault.
The £200 cost should cover replacing one loom, if there is more than one your looking at an additional £100, but you would be getting the loom from a scrap yard anyway rather than new and they normally only charge £30-50.