Really small job at the lights the other night - maybe 3mm. Pretty sure this is a Psocid.
No interactions present.
A very common species, and generally pretty distinctive - you'll be seeing this everywhere once you've found a few.
Lat/Lng: 51.072, -0.69
OS grid ref: SU918311
Outside the window of my house, in mixed broadleaved woodland, altitude 238m, oak, birch, chestnut and willow nearby.