No interactions present.
Deroceras reticulum in the common species in gardens. Not distinguishable from D. agreste without dissection.
just checked again and mistakenly added this observation twice, earlier version at http://www.ispot.org.uk/node/239615 I could remove that earlier version.
Still the breathing pore is on the other side. But I think Arion is OK. Yellow mucus, Regards, Martin.
Lat/Lng: 51.991356944444, -0.7232225
OS grid ref: SP877333