26008 at Carlisle, date unknown but possibly mid to late 80s - I'm sure someone will have a better idea than I do! It's obviously had a door swap.
Edit to add:
According to "Scotland's Diesel Fleet in Detail" 26008 had a bogie swap with rectangular footsteps by April 1984. In early 1985 it was reallocated to Inverness and received its black and yellow stag logos before being reallocated to Haymarket by April 1985 where it received castle logos.
For comparison: www.flickr.com/photos/dwbphotos/8429693261
Can't work out what the replacement door might have come from though!