Think this is Common Dog Violet. Flowering in abundance in large patches
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This early it's more likely to be V. odorata which comes in a wide variety of shades from deep purple to white. The trick is to look at the sepals. Rounded sepals = V. odorata.
BSBI VC Recorder
Thanks for the help Chris. Expert advice and pointers are always welcome.
Please see my Flickr photo's www.flickr.com/photos/129804972@N07/
Lat/Lng: 53.6479, -1.253
OS grid ref: SE494170