Going back to the original post, the Trail Riders Fellowship have put in byway claims on many routes over the years, all over England and Wales. Many of these routes were either recorded as footpaths or not recorded at all. However, if there wasn't sufficient evidence to support a byway claim, these routes ended up as bridleways instead. IMO horse riders and motorcyclists seem the most proactive at submitting definitive map modification orders. Not to mention that since NERC, although many TRF byway claims can't proceed to full byway status, they are still able to be recorded as 'resticted' byways, which are open to ALL non motorised users.
One thing NIMBY types forget is that trail riders aren't just going to give up their hobby and take up knitting or something. They WILL carry on, and nothing short of a jail sentence will stop them. The majority of the general public don't mind trail bikes, live and let live etc, I've *never* had any problems. There are a small minority of hell-bent NIMBYs, but most of these are >50 yr old semi retired townies, who will hopefully pop their clogs in a few more years.
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The NIMBYs have no proper sensible arguments, just overblown hyperbole and outlandish tales that they then try to influence their parish council/MP with. Pretty much all their arguments can be refuted or discredited, leaving them with no option but to discredit the hard work and successes of organisations such as the TRF.
For an island as overcrowded as Britain, I think that it's pretty remarkable that there are still rights of way open to all users. It would be a really sad day if the NIMBYs get their way. The only people who would ultimately benefit from such a restriction would be landowners, who would no longer have a public road across their land.