Have my front hedge as a double row! Yes, it is nasty but it does the job My ones keep their leave through the winter and only shed them in spring as the new arrive.
You could keep an eye on the neighbours with a bit of box....... Makin bacon...... I think this ones the pits .......
Years ago at Beckington, Wiltshire there use to be large topiary battleship, when house was sold, new owner had it cut down.
How bad is that! you would think that would be in the terms of sail .....Ooops ! that was a bad one.....
Been looking for a pic of the battleship, sorry no joy . But I did find these - The bike rack that upsets the neighbour should of used the laylandii and for Xmas