Suitable Plant to bridge 6 mtrs

We have just completed a new build behind another house and we intend to grow a climbing evergreen plant or shrub in a large (900mm high) planter either side of two south facing brick piers 2.5M high and 6M apart. We wish to bridge this opening with high level trellis 600mm deep. We live in Lincolnshire where it can get very cold in winter. We are both getting on in years and therefore require something quick growing to form a screen between us and our neighbours to give each party more privacy.