I saw this lizard scuttle across the path and just managed to block its route with my map. I was surprisingly easy to catch.
No interactions present.
It's now Zootoca vivipara, though Lacerta is widely known and used so it may take a while (I still think of it as Lacerta and convert, a bit like feet to metres!)
Lat/Lng: 51.2, -3.8
OS grid ref: SS8047