Just bunked off work for 10 minutes to go to the post office. I'm approaching a set of lights when I spot a pure white GTI or GTD coming towards me. I didn't register that is wasn't a regular Golf until it was almost level with me and then it was gone. I was thinking "WOW, what was that?". Glance in the rear view mirror confirmed it was a mk7 by the tail lights shape.
I turned around to follow, but unfortunately due to Cambridge's sh!t traffic light timing this took about 5 minutes

Not to be deterred I guessed it was heading to Vindis VW dealer as it was in that direction so I went there and sure enough there is a pure white GTD demo outside the main entrance. Disappointingly when parked it didn't give me any of the "wow" impression I had got when it passed me. Perhaps a lot of the looks are down to the DRLs as they were definitely noticeable in the split second view I got of the front end when it drove past. Could also have been the sun glinting off it as it was in motion.
One thing was it had "demonstrator" hung in the window, and thinking back now I didn't take note of if it had real plates on or not. So there is a possibility it was a different GTI/GTD I saw pass me, though it does seem a big coincidence if that is the case. Otherwise they put the demo sign up pronto as I was no more than 5 minutes behind it reaching the dealer.
EDIT:
Oh yeah, and when I got back to work I realised I'd forgotten about the post office!
Unfortunately no pics as my phone was all I had and its decided to give up the ghost I think.