The short answer
Many modern CCTV cameras can record audio, often through a built-in microphone and two-way talk, but audio is treated more strictly than video under UK privacy rules and is frequently best left off. Cameras with two-way audio capture sound as well as picture, useful for hearing and speaking to callers. However, the ICO's domestic-CCTV guidance flags audio recording as particularly intrusive — far more so than video — and advises it should normally be disabled unless there is a strong, specific reason for it, because continuously recording people's conversations is hard to justify. Most systems let you turn the microphone on or off in settings. If you do record audio, you must be able to justify it, make people aware, and handle it fairly.
Audio is a feature many cameras now include, but it carries heavier responsibilities than video. The sections below explain how it works and the rules that make it sensitive.
CCTV and audio
- Can cameras record sound?Many can (built-in mic)
- Two-way talkCommon on smart cameras/doorbells
- Default adviceUsually keep audio off
- ICO viewAudio is particularly intrusive
- ControlEnable/disable in settings
How CCTV audio works
Plenty of modern cameras and video doorbells include a built-in microphone, and many add a speaker for two-way audio, letting you hear what is happening and speak to whoever is there — handy for telling a courier where to leave a parcel or greeting a caller. On these devices, the microphone can capture sound alongside the video, and the recording is stored together. Some wired systems also support audio, sometimes via cameras with mics or a separate audio input on the recorder, though many traditional CCTV cameras are video-only.
Whether audio is actually being recorded depends on the device and its settings. Two-way talk for live conversation is one thing; continuously recording ambient sound is another, and the two are often controlled separately. Because of the privacy implications, manufacturers usually let you enable or disable the microphone, and some default it off. It is worth checking your camera's settings to see exactly what it captures.
Why audio is treated more strictly
The key thing to understand is that, in privacy terms, audio is more sensitive than video. The ICO's domestic-CCTV guidance highlights that recording conversations is particularly intrusive and harder to justify than capturing images, because it can record private discussions people have no expectation of being overheard. As a result, the guidance is that audio recording on home CCTV should generally be turned off unless there is a clear, specific reason for it — and even then it should be limited to what is necessary rather than recording all the time.
This makes audio a feature to use sparingly and deliberately. A two-way doorbell conversation to answer a caller is reasonable; leaving a camera continuously recording a neighbour's garden conversations or a public footpath is not. The table contrasts how video and audio are typically viewed.
| Aspect | Video | Audio |
|---|---|---|
| Commonly recorded | Yes | Optional, often off |
| Privacy sensitivity | High | Higher (more intrusive) |
| ICO default advice | Justify and minimise capture | Usually disable unless needed |
| Typical justified use | Security monitoring | Two-way talk to callers |
Indicative comparison for guidance. Sources: ICO domestic CCTV guidance.
Managing audio responsibly
If you decide audio adds nothing for you, the simplest approach is to disable the microphone in the camera's settings so it records video only — this avoids the extra privacy burden entirely and is what many people choose. If you do want audio, use it narrowly: enable two-way talk for answering the door or a gate, but think hard before continuously recording ambient sound, and limit any recording to your own property rather than capturing conversations beyond your boundary. Be able to justify why audio is necessary for your purpose, because under the ICO's guidance you should only collect what you genuinely need.
Where audio is recorded, the same wider duties apply as for video, with an extra emphasis on intrusion: make people aware that recording (including sound) takes place, perhaps with signage; keep recordings secure and no longer than necessary; and be ready to respond if someone asks about footage or audio of themselves. A friendly word with neighbours before fitting any camera that might catch their property — and especially their conversations — helps avoid disputes. In short, CCTV can record audio, but because sound is treated more strictly than picture, the sensible default for most homes is to keep it switched off and rely on video, enabling audio only for a clear, limited and justified purpose.
Frequently asked questions
Is it legal to record audio on home CCTV in the UK?
It is not banned, but the ICO's domestic-CCTV guidance treats audio as particularly intrusive and advises it should normally be disabled unless there is a clear, specific reason. If you do record sound, you must be able to justify it, make people aware, keep it secure and no longer than necessary, and limit it to what you genuinely need.
How do I turn off audio recording on my camera?
Most cameras and video doorbells have a microphone or audio setting in the app or recorder menu that you can switch off, leaving video recording active. Two-way talk and continuous audio recording are often separate options, so check both. Disabling the microphone is the simplest way to avoid the extra privacy responsibilities of recording sound.
Does a video doorbell record what people say?
It can, if its microphone and audio recording are enabled — many doorbells offer two-way talk and can capture sound. Because audio is more sensitive than video, consider whether you need continuous sound recording or just live two-way talk, and check the device settings to control exactly what is captured.
Sources & further reading
- ICO — domestic CCTV systems guidance (including audio)
- Get Safe Online — CCTV and home security advice
Figures on this page are typical UK ranges drawn from published sources and depend on your specific property and system. They are guidance, not a quotation.