The IPC has around 40 members mostly ex-clampers and one-man bands. The level of professionalism is low and is reflected in the way the IPC is run too. Their IAS (Independent Appeals Service) is also set up differently from the British Parking Association's professionally run POPLA. The IAS works on the basis that the burden of proof is on the driver to prove the parking charge was NOT valid, whereas with POPLA and the courts, the burden of proof is on the parking company. This has led to accusations that the IAS is biased, something that is not helped by the fact they never reveal the names and qualifications of the people making the decisions - again unlike POPLA and the courts.