Virgin Media say... we made some changes to our TV platform which affects some of our TV customers. This change means that customers watching Sky Sports 1, 2 & 3 may notice a 10 digit number appear on the bottom left of the screen. This number will appear for only for a short time, usually no more than 5 minutes but may reappear periodically throughout the broadcast. This change comes part of our domestic broadcast security arrangements and I can confirm that the number is generated by the broadcast and not by your televisions.