Pertwee is king of telly ads.
Campaign magazine put the late Dr Who star Jon's son at the top of their dynamic dozen voiceover artists.
The ex-Royal Shakespeare Company actor lends his tones to ads for the Royal Mail, Max Factor, Anadin and Carlsberg.
But some of the other top talkers aren't so well known.
Specialist actors Lewis MacLeod, who narrates the Nationwide ads, and Tom Oldham - the voice of Vodafone - also made the list.
Campaign said: 'The decision to use these voices is seldom taken lightly. Every voice has connotations with repercussions for the brand it is promoting.'
Other names in the top 12 are better known. Hugh Laurie has been used by 18 different brands in nine years.
Kumars at No 42 host Sanjeev Bhaskar also picks up loads of work, doing ads for Boots, Hugo Boss, Panasonic and Tropicana.
But the job is not as lucrative as it was. Big names used to earn pounds 10,000 for 15 minutes' work. Now there's a pounds 2000 flat fee.
The other voiceover stars are comic actor Jon Glover, sitcom star Michael Fenton-Stevens, Harry Enfield's dad Edward, presenter Iain Lee, comedian Ben Miller and Felicity Montagu and Simon Greenall from I'm Alan Partridge.
SMOOTHIE: Sean Pertwee