My hebe turns a dark purple during the winter months . I have a dog wood so have lovely red branches during the winter. Also have a twisted Hazel when the leaves have gone have dark brown twisted branches all winter. Woody herbs look good all year round so does creeping Phlox .heucheras and lavender look good all year round. I live in the north west of England near the sea.
If the garden is not too sunny, I'd go for heucheras too. You can get so many lovely variations of leaf colour and some have very pretty flowers - not huge but delicate in shades of white, coral and red.
If it is very sunny, how about lavenders? There are compact varieties that won't grow too leggy as long as you look after them.
Both heucheras and lavender are easy to take cuttings from, so even if you started with a few you would soon fill the space.
My DH planted a couple of hollies when we moved here. Both variegated varieties a male and a female bush so that one has berries. Good for year round interest, and fairly slow growing.
We are finding gardening to be a bit tough now so are looking to put some weed control matting down and make holes for some perennial plants. The first area we are tackling is a long fairly narrow strip in the front garden.
Can anyone suggest some plants which look presentable in winter as well as summer? A friend suggested hebes but I don't know much about them. We'd need quite a few so that could end up expensive. Any help very much appreciated.