A newt of some kind? Perhaps one associated with inland Cornwall (about 3 or 4 miles inland)?
No interactions present.
Lat/Lng: 50.3536, -4.8103
OS grid ref: SX001541
200 metres above sea level- quite high for Cornwall. Just south of China Clay workings - and south of the large area of current and past China Clay workings (a.k.a. The Cornish Alps). Very waterlogged field.