Small flowers <10mm. Club shaped stigma. Narrow toothed stalkless leaves. Hairs on calyx. Ridged stems.
No interactions present.
ciliatum is just out here - the large flowers suggest that to me - can you check the upper stem and confirm that there are no dense spreading glandular hairs?
I've had another look today and can't see any hairs but I'm not 100% sure where I'm looking and what I'm looking for. I've added another image which is the best close up of the flower stems that I can get with my camera and lens.
I cannot see any stem glands on a blow-up of photo 2.
cicuta58 is probably right then, thanks for checking
Lat/Lng: 53.7045, -1.9186
OS grid ref: SE054231
At my veg plot