"Dave H." gurgled happily,
sounding much like they were saying:

Seeing a lot of towbars that fit the car on Ebay, is it necessary to
have 'em professionally fitted (will insurers, the DoT etc. insist on
it) or is it something a competent DIY mechanic can do given the correct
fittings / big drill / crushtubes for the chassis members?

How new's the car? If it's post-98, they need to have EC approval for the
car, which needs them to use the manufacturer's install points - so very
little drilling etc. Multiplexed electrics on newer cars will mean wiring
probably needs a specific kit, too.

There's no requirement to have 'em pro-fitted, even on a brand spankin'
car.