Akebia quinata is a good clamberer thru trees and shrubs. Sweet flowers in spring. But it will get really big - so only plant it if you have the space. Otherwise how about a rambling rose - many do ok in shadier areas and climb thru trees well. If its very shady - and you want to support insect life - Ivy comes in many different types and will grow in most places, good late nectar for butterflies etc.

Hydrangea petiolaris? Very pretty, and self-clinging.

Hello and thanks for your reply, we did wonder about Hydrangea,but not sure as our fence is wooden and not too young !!

Hoya 25,THanks for your suggestions we are considering a climbing or rambling Roses as our garden is only small ,so we want to make the most of the space ,will keep you posted ,olly

Although not a climbing rose, 'Souvenir du Docteur Jamain' can be trained against a fence. He is a deep red colour, and appreciates being out of the sun