Posted: Today at 12:08
A row of something like Amelanchier would work well M'smum. They don't get huge, but provide a light canopy and therefore won't create too much shade either. You only need something tall enough to stop people seeing in, so it doesn't really need to be that tall. My front room is similar, but people are looking up and often only see the top half of the room when going past. However, without knowing the distance from house to boundary, it's difficult to make other suitable suggestions.
I'm also wondering if, since the house is slightly elevated, it could also be simpler to have some decent window boxes if your sills allow. That would provide a low growing barrier that would be attractive from inside or out, and would give a bitof privacy. A few small evergreens for all year round colour, and you can add a few bulbs and summer planting as appropriate