Posted: 05/09/2016 at 18:32
Not a lot of room Loydall. Many shrubs or hedges won't be great there, but I'd suggest Hornbeam or Beech which can be clipped into a narrow hedge, and they retain their foliage over winter. I had common oldprivet in a similar location many years ago.
Alternatively,put up a screen of trellis just inside your wall which you can plant climbers on - there's several options from boring old ivy, to things like a Clematis. Something like a Montana could be woven in and out and although not evergreen either, it will have a framework of branches over winter.
I'm sure you'll get other suggestions of evergreen climbers that might suit though. Many aren't hardy for me, but might be fine for you