Is CB Radio Legal in the UK? Licence, Channels and Power Rules

If you are new to CB radio, one of the first questions you may ask is: is CB radio legal in the UK? The simple answer is yes, CB radio can be used legally in the United Kingdom, provided that the equipment is suitable and operated within the rules.

This guide explains whether you need a licence, what CB radio channels are used in the UK, what power limits apply and what you should check before buying or installing CB equipment.

If you are building a setup, you can browse our CB radios, mobile CB antennas, base CB antennas, coax cables, SWR meters and CB radio accessories.

Is CB Radio Legal in the UK?

Yes. CB radio is legal in the UK when used with compliant equipment and within the permitted technical conditions. According to Ofcom, CB radio has been exempt from the need to hold a Wireless Telegraphy Act licence since 8 December 2006, as long as the equipment is operated according to the relevant technical parameters.

This means that most everyday users do not need to apply for a CB radio licence before using suitable CB equipment in the UK.

Do You Need a Licence for CB Radio in the UK?

In normal CB radio use, you do not need an individual CB licence in the UK. The licence exemption applies when the radio equipment meets the required standards and is used on the permitted CB frequencies, modes and power levels.

This is different from amateur radio, also known as Ham radio. Amateur radio normally requires an amateur radio licence, while CB radio is intended as a simpler, licence-exempt communication service for general users.

CB Radio vs Ham Radio: What Is the Difference?

CB radio and Ham radio are often mentioned together, but they are not the same thing.

• CB radio is designed for short-range public communication and is licence-exempt in the UK when used correctly.
• Ham radio, or amateur radio, gives access to wider bands and operating options but requires an amateur radio licence.
• CB equipment is generally easier to use and popular with truck drivers, off-road users, farmers, hobby users and mobile operators.

If you want a simple communication setup for vehicle or local use, CB radio is often the easier starting point. If you want to explore wider radio communication, technical operating and long-distance amateur bands, Ham radio may be the next step.

Which CB Channels Can You Use in the UK?

UK CB radio uses channels in the 27 MHz band. The UK has historically used its own CB channels, and CEPT/EU channels are also commonly supported by modern CB radios.

When buying a CB radio for UK use, make sure the radio is suitable for UK operation and supports the correct channel plan for your needs. Many modern CB radios include multi-standard settings, but the radio must still be used correctly for the country you are operating in.

Common UK CB Channels

Some channels are commonly associated with specific types of use. Ofcom documentation lists Channel 9 as an emergency calling channel, Channel 14 as a calling channel and Channel 19 for mobile use. However, users should remember that there is no guaranteed 24-hour monitoring service for CB emergency calls in the UK.

• Channel 9: emergency calling channel.
• Channel 14: calling channel.
• Channel 19: commonly used for mobile communication.

In practice, local use can vary depending on the area, user groups and type of activity.

What Power Limits Apply to CB Radio?

CB radios must be used within the permitted power limits. For many CB users, the key point is that standard CB equipment is designed to operate at limited power, making it suitable for local and mobile communication.

Ofcom’s AM and SSB authorisation documents refer to 4 watts for AM double sideband and 12 watts peak envelope power for SSB operation. FM CB operation is also commonly associated with 4 watts output. The important practical advice is simple: use compliant CB equipment and do not modify radios to transmit beyond permitted limits.

Can You Use AM, FM and SSB on CB in the UK?

Modern CB equipment may support different operating modes, including FM, AM and SSB depending on the model and country settings. AM and SSB operation became authorised for CB use in the UK under specific conditions, but the equipment must still comply with the relevant requirements.

If you are buying a CB radio, check that the radio is suitable for UK use and that you understand the correct settings before transmitting.

Can You Use a European CB Radio in the UK?

Many modern CB radios are multi-standard and can be configured for different countries. However, not every setting is suitable for UK use. If your radio has country codes or band settings, make sure it is set correctly for UK operation.

If you are unsure, ask before transmitting. Using the wrong setting can put you outside the intended frequencies, modes or power conditions.

Can You Use a UK CB Radio Abroad?

You should not assume that a UK CB radio setup can be used abroad in exactly the same way. Ofcom guidance notes that UK-specific CB channels should not be used abroad, and that users should check the rules of the country they are visiting before operating CB equipment.

Regulations can vary between countries. Always check local rules before transmitting outside the UK.

What Equipment Do You Need for a Legal CB Setup?

A basic mobile CB setup usually includes:

• A compliant CB radio.
• A suitable mobile CB antenna.
• A secure antenna mount.
• Good quality coax cable.
• An SWR meter for checking antenna tuning.
• A suitable power connection or power supply.

The radio is only one part of the system. A poor antenna installation, damaged cable or high SWR reading can reduce performance and may create problems during transmission.

Why Antenna Tuning Still Matters

Even if your radio is legal and compliant, your antenna system still needs to be installed properly. A badly mounted or poorly tuned antenna can reduce range and create a high SWR reading.

Before using a new setup regularly, it is good practice to check the antenna with an SWR meter. This helps confirm that the antenna, mount and coax cable are working together properly.

You may find these guides useful: How to Choose the Right CB Antenna for Your Vehicle and What Is SWR? How to Tune a CB Antenna Safely.

Who Still Uses CB Radio in the UK?

CB radio is still used by many people who need simple, practical communication without relying on mobile networks. Common users include:

• Truck drivers and commercial vehicle users.
• 4×4 and off-road enthusiasts.
• Farmers and rural users.
• Convoy and event users.
• Hobby radio users.
• Home base and local communication users.

CB radio remains useful because it provides direct radio communication between users. It does not need mobile signal, data coverage or an internet connection.

Is CB Radio Good for Truck Drivers?

CB radio can still be useful for truck drivers, especially for short-range communication, local information and communication with other road users who are also using CB.

For trucks, a good antenna setup is especially important. A strong mount, suitable antenna length, good coax cable and correct SWR can make a big difference to performance.

Is CB Radio Good for Off-Road and 4×4 Use?

CB radio is popular with some off-road and 4×4 users because it allows direct communication between vehicles. This can be useful during group drives, events, green laning or rural travel where mobile coverage may be unreliable.

For off-road use, choose a durable antenna and mount that can handle movement, vibration and weather exposure.

Can You Modify a CB Radio?

You should not modify CB radios to operate outside the permitted conditions. Increasing transmit power, using the wrong frequencies or altering equipment in a way that makes it non-compliant can cause interference and may put you outside legal use.

For legal and reliable operation, use suitable CB equipment and install it correctly.

Responsible CB Radio Use

Good CB radio use is not only about equipment. It is also about operating responsibly. Avoid causing interference, keep transmissions sensible, use appropriate channels and respect other users.

CB radio works best when users share the band responsibly and keep communication clear, useful and respectful.

CB Radio Legal Checklist for UK Users

Before transmitting, check the following:

• Your CB radio is suitable for UK use.
• The radio is set to the correct country/band mode.
• You are using permitted channels and modes.
• You are not exceeding permitted power limits.
• Your antenna is securely mounted.
• Your coax cable and connectors are in good condition.
• Your SWR has been checked and is within a safe range.
• You are using the radio responsibly and avoiding interference.

Final Advice

CB radio is legal in the UK when used with suitable equipment and within the permitted rules. You do not normally need an individual licence for standard CB operation, but you do need to make sure your radio setup is compliant and installed correctly.

If you are buying your first CB setup, focus on the complete system: radio, antenna, mount, coax cable, power connection and SWR tuning. A well-installed setup will usually perform better, last longer and be easier to use.