Ask most people what a voiceover artist does and they'll picture either a TV ad or a radio commercial. Both are correct ... but the two formats are quite different in their demands, and a voiceover artist who excels at one isn't automatically the best choice for the other. Understanding those differences helps you brief your artist more precisely and get a better result.
THE FUNDAMENTAL DIFFERENCE
The most important distinction between TV and radio voiceover is this: on television, the voice supports the picture; on radio, the voice is the picture.
In a TV commercial, the viewer is watching something ... a product, a scene, a face, a demonstration. The voiceover adds information, emotion or context to what they're seeing, but it shares attention with everything else on screen. A subtle performance can be highly effective because the visuals carry much of the communicative load.
In a radio ad, there is nothing else. The voice ... supported only by music and sound effects ... has to do everything. It has to create a world in the listener's imagination, make them feel something, communicate the key message, and drive action, all through sound alone. Radio is a more demanding medium in many ways precisely because there is no safety net.
The best radio voiceover artists are like actors without a stage. They have to conjure the entire scene from a single read. That's a specific and demanding skill ... and it's different from the contained, supportive performance that works best under picture.
KEY DIFFERENCES: TV VS RADIO
TIMING: THE GREAT DISCIPLINE
Both TV and radio commercial voiceover involve strict timing requirements ... but the nature of that constraint differs significantly.
For TV, the voiceover artist is usually recording to a locked or near-locked edit. The picture dictates the rhythm. If the client wants the tagline to land exactly as a product shot appears on screen, the read has to hit that mark. Experienced TV voiceover artists develop a strong sense of internal timing ... they can feel where a cut is coming and adjust their pacing mid-read without being told.
For radio, timing is more about total duration. A 30-second radio ad has to fit in 30 seconds ... not 31, not 29. Scripts are usually written to a word count that approximates the right length, but actual delivery speed varies depending on the performance. Knowing how to compress or expand a read by a second without it sounding rushed or padded is a craft skill that takes years to develop.
THE ROLE OF MUSIC
Music plays a different role in TV and radio commercials. In TV advertising, music often sets the emotional tone and is mixed alongside dialogue, voiceover and sound design in a complex audio landscape. The voiceover needs to cut through that mix without dominating it.
In radio, music is typically the sole accompaniment to the voice. The relationship between the voiceover and the music track is more intimate ... the performance needs to work with the tempo, mood and energy of the music, not fight against it. A warm, relaxed delivery over a gentle acoustic track; an energetic, punchy read over driving beats. Reading to music is a specific skill, and one that distinguishes experienced commercial voiceover artists from less experienced practitioners.
LEGAL COPY: THE FINAL SECONDS
Any UK broadcast commercial involving financial products, healthcare or regulated industries typically includes a legal disclaimer ... the fast-read copy that appears at the end of the ad. For TV, this is often displayed as on-screen text with a quick spoken version. For radio, it's entirely spoken, which means the voiceover artist has to deliver sometimes lengthy legal copy in a matter of seconds, clearly and without stumbling.
Speed-reading legal copy clearly and confidently is a skill that many clients overlook when briefing a voiceover ... but it's something a highly experienced commercial artist will do without breaking a sweat.
WHICH IS RIGHT FOR YOUR PROJECT?
If you're producing a TV commercial, you need a voiceover artist with proven experience working to picture ... someone who understands post-production workflows, can match energy to a visual edit, and delivers a performance that supports rather than competes with the screen.
If you're producing a radio ad, you need someone who can carry the whole piece ... warm, vivid, paced precisely, and comfortable taking direction in a live session. Radio is an intimate medium and the performance has to feel alive and present.
Many experienced British male voiceover artists ... particularly those who have spent two decades working across broadcast ... are genuinely strong in both formats. Experience across thousands of commercial recordings in both TV and radio contexts produces an instinct for each medium that no amount of technical instruction can replicate.
TV OR RADIO ... TERRY DOES BOTH
20+ years of commercial broadcast voiceover across TV and radio, for brands including John Lewis, Sky, Heineken, Jaguar and Argos. Request a free demo on your script.
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