According to the figures, covering the three months to 17 December, the commercial sector now accounts for 43.2% of all listening in the UK, meaning there is a difference of 11.2% between the two rivals. The BBC now has a share of 54.5%.
Despite the corporation's lead, Radio 1 saw listeners drop from 10.58 million in the third quarter to 10.26 million in quarter four, a drop of 3%. Year on year it was has lost 32,000 listeners, down from 10.29 million.
In terms of the London market, Radio 1 reported a reach of 1.29 million compared with quarter three when it had 1.43 million.
Radio 4 saw a drop from 9.47 million listeners in the third quarter compared with the 9.34 million in the fourth quarter, a dip of 1.3%.
Radio 2 enjoyed an increase in the latest results, rising from 12.74 million listeners in the third quarter to 13.27 million in the fourth, a rise of 4.2%. Year on year Radio 2 added 17,000 listeners.
Radio 3 was up on the year, with an extra 55,000 listeners tuning in. On the quarter, it was up marginally, with a.1% increase in reach.
Radio 5 Live added listeners, up 125,000 on the year, to 5.85 million. Quarter on quarter it was up 1.7%.
In terms of breakfast shows, Chris Moyles continued to add listeners, up from 6.81 million listeners in the last quarter to 6.82 in the fourth. Year on year, he added 163,000 listeners.
Terry Wogan added listeners on the quarter and year on year. He added 332,000 listeners over the three months to 17 December alone.
The Todayprogramme on Radio 4 also added listeners, with 6.21 million listeners in quarter four, up from 6.13 million in the previous quarter and from 6.23 in the same period last year.
Nicky Campbell on Radio 5 Live added 65,000 listeners on the quarter, recording a reach of 2.33 million.
Meanwhile, BBC London 94.9 added 65,000 listeners over the quarter, with a reach of 559,000 and a 2% share of the London market.