I had disable parking last year and we were told to follow the purple route on to site...This didn't help however as once we got onto the carparks the car park stewards sent us the wrong way and we ended up in E3 (which was not disabled parking!) My friends ended up doing all the carrying to and from the car which was quite nice

but I did feel incredibly guilty and annoyed as getting the disabled parking pass involved getting copies of my hospital notes and stuff which was time consuming...