Posted: 01/04/2016 at 15:29
There's plenty of shrubs which will fit the bill for a bigger space xyz. Some structural planting that you can add to will be ideal. Osmanthus burkwoodii, Euonymous, Eleagnus adn Sarcococca will all grow there. Pittosporum will also be a nice addition, but some are less hardy than others so just check what suits your area and conditions.
You can add others deciduous shrubs like Potentilla and Spirea which get their foliage early. If there's room for something bigger you could put a central specimen like Amelanchier lamarkii to give a bit of height. Then some lower growing evergreens like the aforementioned, and bulbs and perennials to give you colour throughout the year.