'Galanthophiles' are fascinated by slight variations in the patterns on the petals of the various Galanthus species and cultivars. I can see that's intriguing from the botanical point of view but for me the beauty of Snowdrops is seeing them en masse in a natural setting.
These look to be our Common Snowdrop (G. nivalis) which has been naturalised in Britain for centuries. The characteristic upturned green v is evident at the mouth of the inner petal. No-one really knows when the Common Snowdrop arrived. Was it the Romans, the Normans or sometime in the 1500s? Some say it might be native. Being common G. nivalis is the ancestor of numerous deliberate and accidental hybrids.
When I was a child the ruins of an old cottage were still standing in this pocket of woodland. I have always imagined the Snowdrops were once planted by a cottager and have slowly spread themselves around.