You can find details of the SUD here
The UK's National Action Plan sets out a framework for action to achieve the sustainable use of pesticides.
Users of professional pesticides must be able to demonstrate the following legal measures:
1. Integrated Pest Management (IPM) is being followed
2. The person applying pesticides holds a recognised certificate of competence
This has been a legal requirement since November 26th 2015.
3. The equipment being used holds a valid NSTS certificate.
This has been a legal requirement since November 26th 2016 and the rules changed in November 2020. Find our more about the new testing requirement.