I was down Newton Aycliffe way earlier and caught the tail end of a National (would recognise that roar anywhere) heading towards Darlo on the A167.
Didn't get a proper look - but it wasn't in 'local' colours.

Moments later, it went bombing back up in the opposite direction - again, didn't get a good look.
Not expecting to see it again, it took me by surprise, to see it heading back towards Darlo.

Anyone storing/restoring one in that area?
It sounded great.