Not just circuits; there is a noise abatement request to fly 1400ft as you leave the airfield to the VRP. To keep the we need cloud higher than 2400ft; not that many days autumn / winter /spring when we get that, and fewer of those are weekends when most training and pleasure flights take place.
Flying lower to / from the airfield make a rise in noise complaints look certain. That does not bode well for survival of the airfield.