Garden Context: Sunny South-facing Garden in North London, UK. Appers not hugely cared-for in the last decade.
My experience: Almost None! This is my First garden and I'm just learning the ropes.
I've started weeding through the over grown borders of the garden and left behind some plants I didn't recognise.
This plant looks sort of like a moss or grass? I believe the thing beside it is a Wood Aven
What is it?
(No idea what sort of search terms to try. "UK grass-like plant" seems not worth trying :)