If I could give it a zero I would. I paid for a legal document to go via Special Delivery 1pm next day - the deadline for the document was 6pm and it was critical it arrived. At 1:30pm I checked the tracking to see that it had not been delivered. It took 45mins to get through to Royal Mail who said that they would do everything to ensure it was delivered by 6pm. I got a call 2 hours later telling me it had left the destination. I asked for a call by 6pm to confirm status. No call received. I spend another 35 mins to get through as no online options working. No delivery or update but the possibly of delivery tomorrow on a Saturday and too late. This was an expensive 'guaranteed' delivery and Royal Mail failed on every level. To deliver, to communicate, to put right the mistake on time. And the follow up I have to jump through hoops for any compensation and an important legal matter is delayed. A complete failure of service and trust.