Posted: 16/02/2015 at 11:26
My sympathies- our neighbour did this a few years ago. I had all the same worries about the kids outside in full view of neighbours windows and value of our house dropping because of the privacy issue
How about some bamboo in pots? Bamboo screening attached to fence also makes a good temporary option.
We started by putting up a 6 ft fence with a gravel board so just over 6 ft high (only a problem if someone complains!). I've grown up pyracantha (need to be careful with kids due to thorns), evergreen clematis and put in a small tree, laurel and photinia red robin shrubs just for the areas where I really want evergreen privacy. It's taking a few years but I do have some of my privacy back now and it's at least more interesting than the leylandii that was there before!