More elongated than your average snail
No interactions present.
I'm no snail expert, but was there water near by?
It dose look rather aquatic.
Yes, very close to water( Somerset Levels)
could be Lymnaea stagnalis, I know thats quite a large common species?
Lat/Lng: 51.15447, -2.7766
OS grid ref: ST457397
Ham Wall area of Levels