HTWH, thanks for the plant suggestions! Yes, I like the Fatsia Japonica, and an evergreen fern is definitely on the list. I like Heucheras too. The website that you linked to is great, I did a search for plants that grow well in pots. I had a french lavendar plant too, they're really pretty (but see below!).
Thanks Ponders, what lovely photos. Really pretty Acer. Is lavendar hard to grow then? I've had a couple in pots, that haven't fared particularly well, but then again, I probably didn't look after them particularly well.
Thanks one, lots of great ideas. I particularly like the idea of a bay tree, although I'm assuming that would be £!) and a shuttlecock fern. Excuse my ignorance, are species violas what my Granny called pansies? They remind me of her so much, she loved them. I think you're right, I probably need to come round to the idea of a mixture of evergreen and summer plants!
Thanks ppeat, I do love the idea of a bay tree or an olive tree, but wonder how they'd fare (north of England). I definitely want to look into getting a water butt installed.
Thanks everyone, lots of great ideas. I hope I haven't mixed up my names / genus / species
.