All iPlayer users must now own a TV licence, regardless of whether or not they watch programmes live.
The new rules, which will close the so-called "iPlayer loophole", came into effect on Thursday morning.
Previously, only viewers who were watching shows as they were being broadcast required a licence.
That meant it was legal to watch content after broadcast via the catch-up service without paying the annual £145.50 fee.
http://www.bbc.co.uk/news/entertainment-arts-37226030