Approx 2cm long, 2 antennae on head. Found in dead tree trunk, brown colouring.
No interactions present.
I don't think I could be certain of the species from the photos alone, but it certainly looks like one of the Polydesmus millipedes, and P. angustus is quite likely.
Entomologist and biological recorder
Lat/Lng: 51.3409, 0.3961
OS grid ref: TQ669629
Amongst composting soil & dead leaves in dead tree trunk.