Quite a small woodlouse...
No interactions present.
The square uropods that do not protrude beyond the rear of the body quite clearly indicate an Armadillid species (uropods are elongated and protrude considerably beyond the end of the body in ALL other woodlice families native to Britain, incluing Oniscus). However, I do wonder whether it is a juvenille Armadillidium depressum, a locally common species in SW England. These are often lightly mottled and often romp around gardens and indoors.
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
Lat/Lng: 51.4, -2.7
OS grid ref: ST5771