The whole thing was odd to me, I also expected it to be LHD, and that it says it's from Derbyshire which is noticeably north of here and is still an active ambulance despite being registered in 2001! That being said, I searched the plate on google and there is a photo on Flickr posted, with a comment a year ago saying it was on a Facebook group being broken down, so seems like I might have captured it's last journey...