RAJAR

But her audience dipped from nine million when she started to 6.28 million this summer, according to industry figures from Rajar.

The latest figures from radio industry body Rajar state that Ball's programme is the most listened to breakfast show in the UK, with 6.3 million listeners.

Backed by an entire mariachi, images of the pair appeared as the son sang the final notes of “No Me Sé Rajar.”

North's breakfast show rival on Radio 1, Greg James, enjoyed a similar boost, adding about 400,000 listeners to reach 4.3 million between July and September, according to industry ratings body Rajar.

But Bruce, going head-to-head with his Radio 2 successor, has increased the audience for his new Greatest Hits show to 3.7 million, Rajar said.