Had to ring to clarify directions . Parked car and was transported to airport promptly. Dropped off near departurtures in express drop off area and advised we would be picked up from same place. On return we were asked to walk to pick up point some distance away explained I had mobility issues and could not do so. Driver said we had to pay another £5 to get out which had not been advised before or at any point in booking process. I have found out since it is possible to recover charge if you hold blue badge but need vehicle reg number to do so which I didn't have. Van was very difficult for access due to mobility issues but steps are available on request.