One of my favourite wildflowers - Bird's-foot Trefoil - and yes, I know, I seem to have lots of favourite flowers, LOL.
This member of the Pea family only occurs in a very few places in this city - I think I have seen it in just three locations. Love the brilliant yellow with faint red lines, and the way the flowers tend to form a ring or a partial ring. This one was growing at Bowmont Park. Unfortunately, it is an introduced (non-native) plant from Eurasia.