I have no general problem with reliability of delivery, but Track and Trace simply doesn't do what it describes. Instead of being able to see my item's progress from place to place, and if it's out for delivery, I'm told: "Your item has been posted at a Post Office. As you've used our Royal Mail Signed For service, the next update you'll see is after we've attempted to deliver to the recipient." So, it could basically turn up at any time and on any day. How is that tracking and tracing? My letter could be anywhere between where it was posted and where I live, and could arrive today or next week. Not good enough.