White flower grows to about 7"
No interactions present.
Have had a closer look and I am not so sure,but cannot remove my ID
frustrating isn't it not to be able to remove! Anyway, I think Iberis!
Based on the fact that you can see the dense clump of foliage below the flowers - and I've never encountered Cardamine pratensis in such dense clusters.
what habitat was it growing in?
I had later thought candytuft,the flowers are as you say not quite right.
had another look and not Iberis - don't know what this is
…and as soon as I looked again I recalled Arabis ferdinandi-coburgii which I used to grow. There are other similar Arabis species so can't be 100%, but a far likelier bet! :)
Accepted scientific name:
Arabidopsis halleri (L.) O'Kane & Al-Shehbaz (accepted name)
Infraspecific taxon: Arabidopsis halleri subsp. gemmifera (Matsum.) O'Kane & Al-Shehbaz
Arabidopsis halleri subsp. halleri
Arabidopsis halleri subsp. ovirensis (Wulfen) O'Kane & Al-Shehbaz
- unlobed via trifurcate. (It also doesn't appear to be stem-clasping, as in Arabis hirsuta and Arabis caucasica, though it's hard to be sure from this photograph.)
Lat/Lng: 52.508, -1.794
OS grid ref: SP140900