LONDON, March 18, 2013 /PRNewswire/ -- From Monday, Sky customers will be able to access the most complete catch-up TV service anywhere in the UK following the addition of 4 on demand (4oD) to Sky's On Demand service. The upgrade comes at no charge for the growing number of Sky customers who have connected their Sky+HD box to broadband and can download catch-up content at a push of a button. New figures show that the surge in connections has continued in the early part of 2013, with the total number of connected Sky+HD boxes now surpassing two million and continuing to grow rapidly. With the launch of 4oD, catch-up content from Channel 4's portfolio of channels - including Channel 4, E4 and More 4 - will be available alongside hundreds of hours of great content from Sky 1, Sky Atlantic, Sky Living, Sky Arts, the BBC, ITV, Channel 5, the History Channel, National Geographic and others. Taken together, it means that Sky+ offers the most complete catch-up TV service in the UK, so customers never need to miss out on their favourite shows. At the same time, older shows and series from the Channel 4 archives will also become available to download from the library section of Sky's On Demand service, where box-sets of classic shows and series are available. Channel 4 series available on Sky will include The Inbetweeners, Shameless, Spaced, Father Ted, The IT Crowd and This IsEngland'88. In addition to joining the On Demand service on Sky +, Channel 4 is also the first terrestrial network to offer its channels and programmes on Sky Go, Sky's award-winning internet and mobile TV service. From Monday Sky Go users will be able to enjoy Channel 4 and More4 live on their laptop, smartphone, or tablet, with E4 and Film4 to follow shortly. In addition, a range of classic Channel 4 shows will be available within the On Demand section of Sky Go. And for Sky customers who upgrade to Sky Go Extra, those Channel 4 shows can be downloaded to watch offline, so they can enjoy TV on the move even when they're not connected to the internet.