When challenged by Justin Webb on BBC Radio 4's Today programme, he said that any move would be "led by the listener", acknowledging recent debate over DAB digital radio coverage on the programme.
Refusing to be drawn on a digital radio switchover date, he said:
"Most cars now have digital radios fitted as standard, it's becoming much cheaper to buy a digital radio; they're much more energy efficient. When we reach a certain target of listening on digital - we're very close to that target - we'll take a view on what the appropriate next steps should be."
"I am going to commit to get digital radio coverage as good as it is for FM."
And the BBC could become involved in making decisions about the future of FM, according to the minister:
"It could be a matter for the BBC to decide, ... , and they may want to make their own decision on the future of FM."
Resources | DAB digital radio updates: August 2015