Found growing within a group of saplings in a mainly chalk grassland area. (Habitat given as woodland but could equally have been grassland.)
No interactions present.
I had just realised my error but had not been able to put an ID to it. (Hope you don't mind me amending my title to 'Purple Flower')
ps The surrounding leaves probably belong to wild garlic.
Lat/Lng: 54.9, -6.1
OS grid ref: NW4374