Posted: 12/09/2016 at 17:05
We had a retaining 'wall' built of sleepers two high on edge if that makes sense - you need a builder or someone who knows what they're doing as they need metal reinforcing rods drilled through them at regular intervals and into the ground quite a long way, to hold them together and stop the weight of the soil pushing them over. It was about four years ago but I can't tell you what it cost, as it was part of a whole list of jobs.
I'm not sure that it would do the job you want, and anyway it would be a shame to cover up a good brick wall.
I think I'd have large trellis panels fixed to posts 'strapped' to the wall - it would need to be done professionally, but I don't think it would cost as much as the scheme you mention. Then I'd grow Clematis montanas up the wall and through the trellis panels - it'd look fantastic.