Common butterfly alighting on plants in woodland margin.
No interactions present.
Other than it being found in Britain which features led you to conclude it was this sub-species?
Forgive me - because of insufficient detail in my sources of reference I deduced Britain from linguistics and logic, i.e. 'britannica'. Regards
If you post a revision to the ID then I can agree to it (seems right you should get the credit since you did basically ID the species).
apparently English ones are P. napi sabellicae. Subsp. britannicae is for Irish ones.
Lat/Lng: 53.3, -2.9
OS grid ref: SJ4186