The long stay car park was very busy and signage to vacant areas needs to be improved. The biggest problem was that when we arrived back into the airport at 7.00 pm after a delayed flight from Jersey, we had to wait until 8.00 for a shuttle bus to take us back to the car. Surely the shuttle bus needs to run 24/7. The sign on the bus stop outside the terminal indicated that there are no shuttle buses between 4.30 and 8.00. This needs addressing urgently as it could mean that people with mobility issues who could not walk back to their car, could be stranded in the terminal for 3 or more hours. As an airport with ambitions to expand services, this presents a major problem.