Ironically, shortly after my parcel force comment above I sent an item using RMSD - this arrived a day late so I planned to claim compensation BUT the TC's allow them 24 hours delay before paying compensation. Maybe my memory is duff but I seem to recall if they fail to meet the 13.00 next day delivery then they refunded you so has this changed? Pretty rich, paying for a premium service and then getting 2nd class performance. Sadly there doesn't seem to be any alternative to this shower though.
Keith