Project Canvas is a digital TV service backed by , and as well as ISPs and , and will allow users to watch catch-up TV services such as BBC iPlayer as well as standard TV services over an internet-connected set-top box.

The BBC claims the project will lower barriers to entry and democratise access to TV.

However, Virgin Media is concerned that the service will force all partners to use the Project Canvas interface and electronic programming guide, and won't fulfil its goals. The ISP has been campaigning for a set of open standards to be implemented instead.

"The BBC Trust has stubbornly ignored all requests to address our concerns by imposing safeguards to prevent the BBC emerging as de facto gatekeeper of the digital world," said Berkett.

"If these standards are contingent on the adoption of a single, branded interface, controlled by the BBC and its partners, then Canvas will significantly distort the market, restrict consumer choice and chill private sector investment."