Section 6 relates to offences detailed in sections 3 and 4, which relate to offering vehicles for sale and repairing vehicles in the road respectively. Nothing there about overnighting contrary to any PSPO!
Even if there is a requirement to give name and address, what can an Enforcement Officer do if one refuses - he has no power of arrest. He could call the police, but if one is long-gone if/when they respond are they going to put out an 'All ports' alert - I think not.
Maybe my refusal to give my name might by some seem unreasoable, but then so are the draftings of these PSPOs.
It strikes me that there is a very undemocratic process going on here- I will expand:-
We the voters/taxpayers vote in a Government in Westminster.
That Government drafts enabling legislation empowering Local Councils to enact PSPOs, probably partly to save Parliament the trouble.
The Local Councils have little expertise, even within their legal departments, in drafting legislation and often come out with nonsense.
Much of the PSPO legislation is unenforcable.
The Local Council do not have enough Officers qualified to enforce.
The Local Council then outsource to private companies, which they probably do not properly brief nor train, to enforce the PSPO.
To my mind this long chain breaks the Principles of UK democracy under which Parliament is the Supreme Legislator and Overseer of the operation of the Legal System.
Geoff