A spider I found climbing up my jumper on my train at Twyford Station (I am a train driver).
No interactions present.
If it was really big I don't think it can be a native species. If it was small (say 1-2cm leg span) then maybe an ID could be suggested.
it was about 4-5cm in diameter
If it were smaller then I would suggest Scotophaeus blackwalli or something similar. But 4-5cm - gosh that's a big spider.
Lat/Lng: 51.4755, -0.8633
OS grid ref: SU790757