Posted: 12/06/2015 at 19:23
I agree with Will. Lilac is gorgeous when it's in flower - there's one in the garden opposite here and for about three weeks each year it's a picture - then for the rest of the summer it's a green blob and in the winter it's a rather unattractive twiggy bundle.
A multi-stem birch would be lovely there, but they're a bit pricey.
A rowan would be lovely, flowers in the spring, leaves in the summer, berries and leaf colour in the autumn and a handsome outline in the winter - and it would be great for birds.