dago,
Yeah I thought it might be a bit dicey. I've already mixed the concrete and put the pole up, as the photos kind of badly show... It's as solid as a rock as there's 8 cubic feet of concrete there (2ft square and 2ft deep). I'm just a little worried about the prospects of it getting bricks thrown at it.
The thought didn't even cross my mind at first. I know I'm going to get good results as far as performance goes. What I don't know is how long it'll last. The back garden is a non-starter as it's minute and east-facing. I thought that where the pole is on the photos was the best spot. Maybe I should just move house.......