The 1st 3 of these photos were taken 19 days after the sighting logged at 4696063, a few metres further East on the same 20 x 10 metre grassed area, which I’ve observed over many years. I’m thinking they may be the same species.
These were novel in terms of the ‘fairy ring’ of mushrooms (photo 5) they formed on the ground, as well as their occurrence in small clusters within the ring itself. These mushrooms were more white & mauve than the white & pinks of sighting 4696063. These also had a slight tan colouration on their caps, and the stems and base of the gills showing varying intensities of a tan colour (?ageing? - suggested by comparing photos 3 & 4, which were taken 3 days apart). The caps here were all fully flared out, and their shapes were fairly even as compared with sighting 4696063, notwithstanding some scalloping at the edges (photos 1, 2 & 3). Photos 4 & 5 were taken 4 days later (so 23 days after the photos at sighting 4696063).