Hi zombie, Evergreen climbers would seem to fit the bill.
The Star jasmine ( Trachelospernum jasminoides) will provide good cover and fragrant jasmin-like flowers.
Another is Clematis armandii which is also evergreen with white fragrant flowers, the variety 'Apple blossom' is a nice one. Both are fairly hardy if you have a sheltered sunny spot that gets plenty of sun and will tollerate tempretures between 5-10 oc (23-14 of)
If it's something more hardy you require, then I'd go for one of the Ivy's (Hedera helix) the brightest of the variegated forms, I think is 'Goldheart' and will cling to any surfice, moderate sun to full shade.
Good Luck Tbird+