Both were together naturally when photographed, did not move together for sake of photo
No interactions present.
I would be more inclined to go with Arianta arbustorum for the snail and Arion subfuscus/fuscus for the slug.
The chocolate flecks and brown band on keel are very typical of Arianta. Also agree with provisional slug ID too.
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
Could I suggest that you amend the identification otherwise we'll be left with an incorrect one!
You spotted it first....
thats the part i don't like. :(
I suppose i will...
Lat/Lng: 55.9551, -4.5151
OS grid ref: NS430764