GMB union has called on Birmingham Airport to fix the “disgusting” facilities that private hire drivers using the airport face having to use. Drivers are forced to pay to use bathrooms “caked in grime”, while waiting for passengers arriving at the Midlands’ largest airport, the union said A recent survey of drivers found bathroom facilities caked in grime and waste, and no waiting areas for drivers, except the paid-for multi-storey NCP car park.