We fitted a tow bar to Florin, our 2b+ & fortunately had no issues with any legal agencies; as did a load of other 7 type kit owners. We even towed our trailer tent down to Le Mans again with no issues.
Probably comes down to if your driving like a loon & DVLA/police have had a bad day then you'll get pulled.
We had a lot of good times away, with our kit & t/tent , if you can afford the B&B/hotel you still miss the alcohol lubricated evenings around the fire at meets like Stoneleigh -- Hoodstock -- Donnington -- Castle Combe -- Prescott.
Those days are past as our towing is now with a 4 wheel drive & boat.