Posted: 11/03/2016 at 13:16
I don't think a pergola with seating will be of much use in a north west facing garden unless the garden's long enough to accommodate it at the end where it gets most sun. Something simpler might get used more
I'd agree with BL - some climbers along that rear fence will instantly make that more attractive. It should be south east facing so will get a decent amount of sun. A good border there to incorporate a seating area would be ideal. Put in some year round interest for attracting wildlife, plus some evergreens and spring bulbs, and that gives you something nice to look at during the winter. I'd keep the hedge too - privacy will be necessary with that conservatory in the far corner.
The area nearest the house can have some simple planting around your patio. Treat that separately - it will be shadier. Small areas work best if they have decent sized planting areas but fewer of them, otherwise it becomes very fussy.
It also depends how much time you have to devote to your garden maintenance.