The online booking system works well, but what an unfair, unethical, over time charging system. I booked your car park opposite the Barbican from 4:30 PM until 10 PM for a charge of £10 - fairly decent all things considered. I overran by 15 minutes, and attempting to exit the car park at 10:15 PM, 10 minutes of which were spent loading my wheelchair into my vehicle. The extra charge was £7 for 15 minutes. The attitude clearly is that you are in our car park, you are our 'prisoner' and we can charge what we like to release you, just because we can. Absolutely disgusting.