BBC Radio 2 is too white and must do more to reach black and ethnic minority audiences, according to an internal review.

The BBC Trust's service review of the corporation's music stations said: "Radio 2's reach among BAME (black, Asian and minority ethnic) audiences over 35 is significantly lower than it is amongst white audiences.

"As Radio 2 has a remit to serve a broad audience over the age of 35, it should address this disparity."

The Trust said it would expect an update on the station's progress in six months.

It also announced that Radio 1 was cutting the number of live sessions and scaling back its coverage of festivals in a bid to save money.

The review said they had "agreed to a reduction in the number of live sessions on Radio 1 from 250 each year to 160 in order to enable savings".

It said the station was "also narrowing Radio 1's quota for coverage of major live events and festivals so that it excludes special editions of live sessions, and includes only BBC and third-party major live events.

"It will reduce from 25 to 10 events."

The review, which said there would be "a small reduction" in drama on Radio 3, praised the stations for being "distinctive" and said they played a "wider range" of music than their commercial rivals.

BBC Trustee Nick Prettejohn, who jointly led the review, said it made for "positive reading".

He said: "The six stations are distinctive from commercial radio through the music that they play, their speech programming, and their support of the UK music sector, something made possible by the unique privilege of the licence fee.

"The BBC imparts an incredibly important function to the musical fabric of this country.

"It must continue to balance its culturally supportive role with awareness of its market impact, particularly as it now looks to its future online strategy."