The overview photo you posted was great Why not shrub out the corner to create balance, and then continue with the same hedge as the other side. So if you can imagine, a mirrored effect. For security and privacy, choose a hedge that is compact and dense, and allow it to grow high enough that it screens from the road, but is still low enough to maintain with relative ease. Hope this helps
Sorry for the delay in responding. Thanks for your suggestions. I'm not that keen on beech for some reason. I don't like the winter colour and crispiness (technical term!).
The awkward shady bottom left corner I am planning to turn into a wildlife area. The neighbours cut down a HUGE conifer last week and I have salvaged as many of the logs as a can for seats and stepping stones for the kids and logpiles for wildlife.
As for the main border in question, I have now erected trellis above the fence at the front and planting a variety of trees, shrubs and climbers!! whoever suggested that this was an easier approach to hedging (did someone say that?!) has a lot to answer for! I am now addicted to looking up plants and I can't go near shops without returning with "just a couple of little plants" to add to the bed! It's getting more and more complicated by the day! But great fun... photos to follow in due course :-)
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Did you consider beech/hornbeam, Lastboat?
The overview photo you posted was great
Why not shrub out the corner to create balance, and then continue with the same hedge as the other side. So if you can imagine, a mirrored effect. For security and privacy, choose a hedge that is compact and dense, and allow it to grow high enough that it screens from the road, but is still low enough to maintain with relative ease. Hope this helps 
Sorry for the delay in responding. Thanks for your suggestions. I'm not that keen on beech for some reason. I don't like the winter colour and crispiness (technical term!).
The awkward shady bottom left corner I am planning to turn into a wildlife area. The neighbours cut down a HUGE conifer last week and I have salvaged as many of the logs as a can for seats and stepping stones for the kids and logpiles for wildlife.
As for the main border in question, I have now erected trellis above the fence at the front and planting a variety of trees, shrubs and climbers!! whoever suggested that this was an easier approach to hedging (did someone say that?!) has a lot to answer for! I am now addicted to looking up plants and I can't go near shops without returning with "just a couple of little plants" to add to the bed! It's getting more and more complicated by the day! But great fun... photos to follow in due course :-)