Wikipedia
Xtraview was a British pay-per-view television channel run by Top Up TV. It replaced Top Up TV Sampler, a promotional channel showing Top Up TV's latest offers presented by Alice Beer. Xtraview showed a selection of programs from the Top Up TV package, at a cost of one pound per day. It ceased broadcasting on August 31, 2005 at 11.00pm due to lack of space on the DTT platform after Top Up TV's short-term lease with Channel 4 on multiplex 2 expired in September 2005, and has since been replaced with More 4. The official reason stated on the channel is that it is being "modified", however no developments were made and this screen was shown from its demise to March 2006.
The channel used the Xtraview Encryption System, making the channel vulnerable to hacking. Another downfall was that if the digital terrestrial receiver was switched off, the box lost access to the channel.
For a short time Top Up TV Pay As You Go 1 offered a replacement for Xtraview. However, Top Up TV Pay as You Go also closed on May 31, 2006.