What does this mean in practice?
Project licences are not approved if they are expected to cause long‑lasting severe pain, suffering, distress, or harm.
Where animals are involved in procedures classified as severe, their welfare must be carefully managed. This includes ensuring appropriate pain relief is provided, or that monitoring and scoring systems are in place with clearly defined humane endpoints to minimise any suffering.
Amelioration is not limited to pain relief and supportive care. It also includes timely euthanasia, which must always be carried out once the scientific objectives of the study have been achieved.
How do I comply with PIL Standard Condition 3?
A common misconception is that a project’s severity banding means animals must experience that level of harm. This is not the case. Regardless of whether animals are housed under mild, moderate, or severe protocols, you must always aim to keep the actual harm experienced by the animal as low as possible.
When working under severe protocols, the project licence will include clearly defined controls or action points, such as specific adverse effects or scoring criteria. These are your humane endpoints and must be followed without exception. Failing to act at these points would breach the protocol, the Project Licence holder’s conditions, and several PIL Standard Conditions (including Conditions 1–8, 12, 13, and often 17). Knowing the humane endpoints for your work and acting promptly when they are reached is essential.
As a new licence holder, interpreting a project licence and applying scoring systems can feel overwhelming, particularly when procedures are known to cause harm. Always prioritising animal welfare helps make decisions around endpoints clearer and more consistent.
Pressure can arise when balancing data collection with animal welfare, especially near the end of a study. It is common for new licensees to unintentionally become non‑compliant by interpreting animal scores more favourably to protect research outputs, for example, when a study is due to finish within 24 hours but an independent observer considers the animal to have reached a humane endpoint. To prevent this, you should be clear on trigger points within scoring systems and involve the NACWO or NVS early, before an endpoint is reached.
Discussing welfare concerns and endpoint decisions with named persons creates a collaborative approach and supports compliance with your wider responsibilities as a PIL holder. Establishments should also have systems in place to support new licensees, providing guidance and oversight to help ensure consistent, welfare‑led decisions are made.
What resources are available to support me?
Your first and most important resource is the project licence protocol. Make sure you read it carefully, understand what is authorised, and are clear on the limits of each procedure.
If you are ever unsure whether those limits have been reached, you should seek advice immediately. Animal care staff, the project licence holder, and named persons are all there to support you and help you make welfare‑led decisions. Asking for guidance early is a key part of maintaining compliance and protecting animal welfare.
What happens if I don’t comply with PIL Standard Condition 3?
Failure to fulfil this Standard Condition will result in a non‑compliance. In most cases, this occurs because animals have been found moribund, suffering, or dead. It is extremely rare for animals experiencing long‑lasting procedural harm without appropriate intervention to survive.
These incidents are not only serious for animal welfare, but can also be highly distressing for the people involved. Intentional breaches of this condition are very rare; non‑compliance most commonly arises through human error, inexperience, or misunderstanding rather than deliberate action.
If this condition is breached, the enforcement team will investigate how the failure occurred. This will include reviewing the actions taken by both the Personal Licence (PIL) holder and the Project Licence (PPL) holder, and identifying what changes will be made to prevent a recurrence.
In some cases, outcomes may include:
- Suspension of an individual’s Personal Licence
- Temporary suspension of specific project protocols
- Mandatory retraining before work can resume
Retraining typically involves completion of the full Home Office modular training, relevant standard condition training, and submission of a written report outlining the incident and the learning gained from it.
Following serious non‑compliance, project licences are often amended to tighten controls, strengthen monitoring, and ensure severity limits are not exceeded in future. These changes are put in place to protect animal welfare and prevent other animals from experiencing similar levels of harm.
How does ASRU assess compliance with PIL Standard Condition 3?
ASRU assesses compliance with PIL Standard Condition 3 by reviewing whether Personal Licence holders understand and act on humane endpoints to prevent severe, long‑lasting pain, suffering, or distress that cannot be ameliorated.
During an inspection, ASRU may review evidence of training on humane endpoints and documented discussions with the Project Licence Holder. Inspectors may also speak with the PIL holder, PPL holder, NACWO, and NVS to confirm competence, understanding, and confidence in recognising and acting at humane endpoints.
How do I know if I am complying with PIL Standard Condition 3?
You can be confident you are fulfilling this Standard Condition by following the controls and humane endpoints set out in the project licence, and by clearly documenting actions taken when animals meet defined scoring criteria. This includes providing supportive care or carrying out euthanasia when required.
When developing your experimental or study plan, you should ensure you fully understand the controls and humane endpoints for each stage of the protocol you will be using, including any general humane endpoints that apply. If you are unsure what a control or endpoint means in practice, you should ask the Project Licence (PPL) holder to clarify. This reduces the risk of misinterpretation and unintended non‑compliance.