Thanks for everyones suggestions. I have made a list and looked them up. I love that Nandina . The pittospurnun i planted in my back garden, one of the first things I put in and it died, so lovely as it is, I feel a bit wary of it. Had alook at the garden and that part that is up against th porch is really not useful, I am now thinking the Photina, not keen on them but one would brighten up that corner.
That tree looks lovely but I think it will be too close to the house, I have to leave room for occassional caravan parking, otherwise it would be in already, liked it so much.
Would that corner take the Pieris or does it need more sun?
I am also channeling my thinking, I think I will plant some verbena bonariensis to float amongst the reds