I first met Ron when he ran the song bit of the Folk Division of the Camping Society of Great Britain at their annual Easter camp in a field near Blockley in the Cotswolds.
The Line 'If a copper stopped my car I'd surely set his bag alight' refers to the early Breathalysers,When one had to blow into a plastic bag through a tube filled with crystals. Depending on the colour change of the crystals you were nicked or not as the case may be.
Ron can still be heard at various events round the country, though I am afraid I have not got a contact for him.