Hi, I found this in a relatively newly seeded wildflower meadow at Brocks Hill - it looks like Pennyroyal, but not sure...
I think pennyroyal is likely to turn up in these situations although it's no longer found as a native in VC55, as far as I know. I don't think we could ID it with confidence from your photos - your plant seems to have a tuft of leaves at the top, which is key to pennyroyal and to Corn mint, Mentha arvensis, and its various hybrids. Pennyroyal usually has small leaves, <1cm, but I don't think this is too reliable. The keys are a bit too complicated to repeat here, but deal with details of the calyx. The exserted stamens might suggest M x smithiana? I think you may need to refer to the keys in Stace, or have your specimen checked out by one of the County Recorders,
Ok thanks for the information - sorry I didn't check this before I submitted it as a possible record. I'll have to try and find it again amongst the other meadow plants!