BBC Three won't move online until 2016, the BBC has said. The channel was originally supposed to become an online-only destination this autumn, but the move has now been put back until "after Christmas".
The channel is waiting for the BBC Trust to approve its proposals. A decision is expected sometime around September.
The channel's controller, Damian Kavanagh, said he would put viewers first.
"We won't be rushed," he told trade magazine Broadcast. "We will do what's right for our fans, not to satisfy deadlines.
"Once we have the Trust's final decision, we'll start doing more online and in social [media], building up to a move online.
"You simply can't turn around something as groundbreaking as this overnight."
Under current plans, the channel will make way for a BBC One+1 service, which will broadcast BBC One shows an hour later than on the main channel. CBBC will also be extended by two hours in the evening.
Third-parties have offered to buy the channel, but the BBC insists it isn't for sale.
According to BBC drama chief Ben Stephenson, the move online will allow the channel to take more risks, as commissioners won't have the watershed to abide by.