I was struck by the way this hybrid primrose gradually changes from almost the standard pale yellow to pink, the flowers becoming darker as they age. Each petal is heart-shaped with a bright yellow splash, which put together, forms a starry centre.
Looking more closely at the flowers, it was surprised that some have five petals, others six and a few seem to have seven(ish). I suppose it is possible that this is actually a small clump of seedlings giving the appearance of one plant. It’s along one of my walks so I’ll have to go back and see if I can get any more clues next time I am passing.