Looks lovely

How about a holly lots to choose from, slow growing beries evergreen I think would look lovely in that corner
Madame Briot is a easy one the leaves are dark green with yellow margins its a good upright shrub easliy pruned and does hole itself realy well in the garden .

Personaly I think James needs more space to get the full effect plus lots of training plus would make that corner much darker

http://www.welsh-holly.co.uk/madamebriothollytrees.htm

Gg

Ceanothus Southmead has beautiful dark green foliage with bursts of dense blue flowers.

I've a couple; one growing as a low bush and one that I've pruned to a column. You can pick these up in some Supermarkets for under 3 pounds and they grow quite quickly.

Sorry Gnarly its very pretty I'll admit but I'm fed up of being spiked by the holly in our hedge so nothing prickly please:-)
They do a beautiful new white ceanothus now Andip but it does get the east winds so I thought it unsuitable on that wall but i'm squeezing one in on the south west facing fence !

Changed my mind Andip I might try snow flurry and grow it as a tree ! It can only die once I suppose lol If anyone has better suggestions then let me know :-) I'm planting something as soon as possible !

You could put the garrya on the fence - the trellis might not be strong enough. We had one on a similar sized fence that was in shade quite a lot of the day and it did very well - not difficult to train.

I'm going with the garrya Steragram will let you know how it fares :-))

You'll love it. :)