The BBC Trust has approved plans to extend iPlayer catch-up from the current 7-day window to 30 days.
The new system will be in place in the summer and will meet a frequent request for an extension from many iPlayer users. Currently people in the UK make 10.7m programme requests daily.
It means that most – but not all - BBC content will be available for the 30-day period, with some movies and sports programming still facing stumbling blocks over rights.
BBC Trust Vice Chairman Diane Coyle said of the changes: “It is important that iPlayer continues to evolve and meet the expectations of users.
“We have conducted a thorough assessment of these proposals, including taking independent advice from Ofcom, and concluded that this is a sensible move that will benefit audiences and provide a clearer and more consistent catch-up service."
The BBC executive welcomed the decision, issuing a statement which said: "People keep telling us they want programmes to be available on BBC iPlayer for longer - so extending availability from seven to 30 days will make iPlayer even better.
“New iPlayer already has downloads, better recommendations, HD, live restart, favourites and collections, and extending the catch-up window to 30 days gives people even longer to enjoy their favourite BBC programmes. We will now set about making this happen with the aim to roll this out from the summer."