NTL started to roll out its Video on Demand (VoD) service branded ""NTL On Demand"". NTL On Demand uses the "Teleport" system on Telewest's network. In contrast to Sky which, due to technical limitations, could only provide near-VOD services, NTL On Demand provided a true VoD system. The service allowed customers of NTL Digital television to download programmes as and when they want to watch them from servers at the customer's local head-end. As the broadcaster automatically stored content on NTL's servers, it removed the need to pre-record many programmes. Users could search through a large library of programmes and watch them when they want to as part of their subscription. This library included a free 7-day watch-again feature for TV-programmes produced by the BBC, Channel 4 and Flextech. NTL also offered other television-shows, films (service branded FilmFlex), and music videos, mostly for an additional fee. The VoD service also provided HD content that would work in conjunction with the TV Drive PVR.