On disturbed arable land at Duchy college.Could be F.Occidentalis(Western Fumitory) or F.purpurea
No interactions present.
I am tending to with F.Purpurea because it is quiete small and scrambling not tall but cant be sure on that one????
purpurea has large oblong sepals and some recurved flowers; this is not purpurea. Try the BSBI Fumaria handbook available from Summerfield Books
Lat/Lng: 50.2233, -5.3024
OS grid ref: SW645411