Posted: 11/04/2014 at 20:16
Hey fidget, that's my suggestion too. A buddleia. It will be happy in poor chalky soil and will grow fast. Especially if bought as a 3 litre plant.
Senecio greyii is evergreen and will do well there...silver foliage a d yellow flowers In June and July.
Try to dig as deeply as you can though
A favourite shrub of mine is choisya ....lovely glossy aromatic foliage and in spring loads of white flowers heavily scented with orange/vanilla. Easily kept low too and evergreen. There is a yellow variety too ....Sundance. Check both out