About 4" long
No interactions present.
PS Common name = Ash-Black Slug
BMIG website: www.bmig.org.uk (centipedes, millipedes & woodlice)
BMIG Newsletters ~ www.bmig.org.uk/view/resource/bmig-newsletter
BMIG Bulletins ~ www.bmig.org.uk/view/resource/bmig-bulletin
Thanks very much Steve and a good idea to put it on some glass next time I come across one but it's a first for me in the valley here. I put the black slug next to it as a comparison but it wouldn't open up, (you'll know this one I'm sure:) Just to add that the Limax Cinereoniger was very dry/matt in appearance. Thanks again.
Lat/Lng: 54.9, -2.4
OS grid ref: NY8057