Access to treatment

How cancer medicines are licensed in the UK

Medicines go through a review process after they have been through clinical trials. In the UK, the Medicines and Healthcare products Regulatory Agency (MHRA) is responsible for licensing medicines.

Medicines and Healthcare products Regulatory Agency (MHRA)

The MHRA ensures any new medicine is safe and effective, and that the benefits outweigh possible side effects. The licence confirms what condition a medicine should be used for and the recommended dose.

The MHRA looks at:

  • the safety and quality standards of medicines, medical equipment and blood products

  • the safety of the supply chain for medicines, medical equipment and blood products

  • educating the public and healthcare professionals about the risks and benefits of medicines, medical equipment and blood products

  • supporting research and development that benefit public health

  • working with UK and international regulations so that they protect public health and support access to safe medicines and medical devices

At the end of their review, the MHRA will decide whether to approve the medicine. Once a medicine has marketing authorisation, it is 'licensed' or 'approved'. All these terms mean the same thing. 

Go to more information about the MHRA on the GOV.UK website

The MHRA works with other medicines regulators in certain countries around the world. 

If a medicine has been approved by another regulator, the MHRA can consider their review and how they made their decision. This makes the MHRA process faster. They may then approve a medicine. Or they can reject an application if they don’t think there is enough evidence.

How long does it take?

It can take many years for new medicines to go through the research, clinical trials and licensing process. Sometimes, doctors can access new medicines that haven’t been licensed yet through the Early Access to Medicines Scheme (EAMS).

The EAMS aims to give people with life threatening or severely debilitating conditions early access to medicines. Doctors can use the scheme when no suitable treatment is available. Or current treatments do not work well enough. 

Find out more about the EAMS

After a medicine is licensed

After getting a licence, other organisations also review the medicines.

These organisations decide which medicines work well and are cost effective to use. They are:

  • The National Institute for Health and Care Excellence (NICE) in England

  • The Scottish Medicines Consortium (SMC) in Scotland

  • The All Wales Medicines Strategy Group (AWMSG) in Wales

After licensing, the MHRA continues to collect information. This information is about how well the medicine works and about the side effects. They continue to check the safety and effectiveness of the medicine.

Find out more about NICE

Off label prescribing

A medicine is usually licensed for a specific: 

  • type of illness or cancer

  • age group

  • dose (how much medicine to take)

Sometimes a doctor might want to use a drug in a way that is not included in the drug's licence. This happens when they think it might help a patient for a specific reason. 

In this case, they can prescribe that medicine for the patient. If they do this, the doctor is responsible for making sure the medicine is right for the patient. And that the benefits outweigh the risks. This is called 'off label prescribing'.

Read about how medicines become available on the National Health Service (NHS) and Health and Social Care (HSC)

Last reviewed: 30 Oct 2026

Next review due: 30 Oct 2029

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