https://www.theguardian.com/uk-news/2023/dec/01/scottish-landowner-who-obst...
Like Lord Big Dave, given a peerage to allow him to be appointed to a ministerial role.
Whatever you may feel about that, though, I'm not sure that the Ramblers have much of a case here. Not being allowed to park your car in someone else's car park isn't actually stopping you from accessing the land beyond, unless other obstructions are in place which do block access on foot and by bicycle. And from what I can see on Streetview https://tinyurl.com/c7k4vzmp the road up to the reservoir has a cattle grid, and a kissing gate to one side. (That photo is from 2011 though, so things might have changed.) Both Google https://tinyurl.com/23s8v4e8 and OS Maps (grid reference NT557633) satellite views suggest that the pull-in next to the filter beds is still there and accessible.
Offering permits to use the car park but limiting them to less than one per day does appear to be verging on being deliberately unhelpful, but it's their car park and they are under no obligation to make it available to anyone they don't want to. (Though one does wonder why they built it in the first place.)
It does strike me as being just a little bit ironic that the Ramblers Association is complaining about it being a long walk to get there...
Any locals got a view on this?