This swathe of Garlic Mustard (Hedge Garlic or Jack by the Hedge) is in an area newly renamed Sproughton Nature Reserve.   It's between the river and an industrial area so should be relatively quiet to attract wildlife there.   
The Garlic Mustard is, I believe,  a favourite of the Orange Tip Butterfly to lay her eggs, she certainly has lots to choose from. 
What a day, high winds, squally showers and tiny bursts of sunshine.   Come back Spring all is forgiven.