For me Raf Brize Norton, beside the runway with the Vulcan preparing to take off.
Any others?
I hear Peterborough gets busy at nightime (@)(@) 
Eastbound carriageway of the Second Severn Crossing, facing west! Right in the centre of the bridge, in the third lane… 
To explain - Doing a patching job a couple of days before it opened and had to drive across on the wrong carriageway…
trux:
I hear Peterborough gets busy at nightime (@)(@)
We used to change over near Peterborough at a place called Stibbington, just on the A47 junction, there was or is a big layby there & more importantly a tea van & plenty of room so it was ideal to get your change over done & have a break but I have to say some of the things I saw beggered belief!
I’m guessing you will all grasp what I mean even though this was usually about 3 -4pm.
I would imagine if this activity carried on into the night it would be difficult to sleep!!!
Used to do skips in houses of parliament and used to take my break while they loaded the skip.
Dudley.
Muckaway:
For me Raf Brize Norton, beside the runway with the Vulcan preparing to take off.
Any others?
In an earlier life I had a AAA pass for RAF Waddington and spent many a happy hour there tossing it off whilst the Vulcans were doing touch and go flying.
another favourite was in a little layby overlooking Le Mans circuit when they were testing
John o groats or 2 nights.peaceful/relaxing great view and very friendly shopkeepers allowing use of toilet and shower fac’s
Sat on the linkspan at the now defunct Dartford ferry terminal a couple of months ago. Break over I drove down onto the pontoon spun round and back up to dry land again.
S.A.S. camp at Bradbury Lines and at Credinhill.
Helped I was attached to the Regt for 5 years 
I stopped for a break at the almost vanished village of Hampton Gay near Kidlington, beside the ruined, burnt out manor house. Creepy as you know what…The legend about it is that on Christmas Eve 1874 a GWR train derailed on the embankment nearby and rolled several carriages into the canal. The tale goes that survivors walked to the manor where a party was going on and the butler, thinking they were beggers pretty much told them to “begger off” without realising there’d been a crash. After that the manors’ owners (who owned the local paper mill) went bust, suffered other misfortunes and the house was gutted by fire about 13 years later. A couple of our old timer drivers weren’t even allowed near the ruin as kids because of the legend
oxfordmail.co.uk/news/943589 … Christmas/
geocaching.com/seek/cache_de … 2be9f3c98b