I am new to the site. Can anyone help me identify and get rid of this weed? I live in central London and the garden was very overgrown when I moved in. I have been battling with this weed ever since I moved in for the last 2 years. I think the soil must be full of its seed. I have tried pulling them up, forking and hoe-ing the soil and round-up.
I tackle them once a week, but allowed one to grow old for these photos below.