www.plantsforshade.co.uk . They have a wonderful array of shade loving plants and my only problem was not buying everything! In the end, I chose six plants: Lathyrus Vernus x 2, Viola odorata 'Baroness Alice de Rothschild', Chasmanthium latifolium ( a lovely delicate grass), Galium odoratum (woodruff, which can be invasive, but that is fine as it is going right at the back of a border) and Hepatica nobilis 'Mid Blue' (in the photo above). They nursery was a pleasure to order from and sent me emails to confirm my purchase, to tell me when the plants had been dispatched and also the courier's details and tracking number. The plants arrived beautifully packed, and are really good quality. As an added extra, they included another Lathyrus as the plants were small! Fantastic customer service!
the sweet pea-like flowers of Lathyrus vernus
Of course, I sent them a very nice email, thanking them and saying that the big so-called 'expert' mail order plant companies could learn a lot from them. I am delighted with the plants and am looking forward to being able to get them planted (if it stops raining). Have a look at the website - it is full of lovely things!