If the car is out of commision, then I assume it has no MOT. In which case it is an absolute criminal offence to allow it to be moving on the highway, unless on it's way to/from a prebooked MOT test, or repairs after failing such a test.
That includes towing. So it would need to be on a trailer, with all wheels off the ground.
In addition to the above requirement, any A-frame attachment would have to brake using the towed car brakes and an over-run hitch as it's more than 750kg gross weight - totally cost in-effective.
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