A message from Simon Henstock:
I spotted this growing in the hedgerow down the Country Park this evening. Is it Shepherd’s Purse? 
Reply from FoSCP
It’s lovely. I think it’s cuckoo flower, sometimes called lady’s smock (Cardamine pratensis) but it’s hard to tell: the evening light has made the flower look blue in this picture and the leaves are hidden in the grass. If you see it again, could you take a picture of its leaves please?
The flowers were a very pale pink and shone out at me as I walked past. If It remember rightly the leaves were small and very slender with not many of them. It’s a plant I would never find in the long grass if it wasn’t in flower.
Is this it, Simon? Cuckoo flower; the leaves are quite fern-like and will be at the bottom of the flowering stem.
That is what it is! I only saw two plants and they were growing right next to each other
There is also this (below) with similar white flowers but a very different leaf structure which I think is Greater Stitchwort. It is quite abundant in the park. And I also saw this with blue flower and red leaves which I need to identify as well.
You’re right, the first picture is greater stitchwort (Rabelera holostea); the flowers have five petals instead of four like the cuckooflower. The last one is ground ivy (Glechoma hederacea). Its leaves are red probably because it’s growing in full sunlight; it prefers shade.
Oh, I was struggling to work that last one out. Thank you for your help correctly identifying the plants
Any time, Simon; glad to help.
Southwick Country Park Nature Reserve 
Growing up in Yorkshire, we used to call Ladies Smocks “Milkmaids”
Yes, that’s what Ian calls them as well.
Well done Simon, there are about a dozen Milkmaids on the bank of the pond. Keep going there a lots of plants and flowers we need to photograph and identify within the park.