Yup, A27 goes through the display area and also Lancing College is pretty close by as well. At either end you have the towns of Shoreham and Lancing with loads of houses. It's all a bit tight in my humble opinion when 1/2 mile away is the open sea.
Well summed up.
In my view this airshow should be given the choice of moving to the sea-front or accepting restriction to more suitable, manoeuvrable aircraft if it chooses to stay where it is.