Group Code of Conduct 2025

We are committed to achieving the highest standards of integrity and accountability throughout our business operations. The Mainstream Code of Conduct is our primary guiding document, ensuring that these standards are embedded in our daily actions, supported by our values and aligned with all Mainstream policies and procedures.

Our values of working together with integrity, boldness and excellence define how we execute our business operations and how we treat one another:

• Working together – We build relationships founded on inclusion, trust and respect.
• Integrity – We act ethically and responsibly in all aspects of our business.
• Boldness – We embrace innovation and pursue courageous solutions.
• Excellence – We strive for high performance and continuous improvement in everything we do.

Mainstream expects and encourages all internal and external stakeholders to proactively uphold these values and to hold each other accountable for maintaining the highest ethical standards. Our Code of Conduct outlines the mechanisms available to Speak Up and provides an overview of our broader Anti‑Corruption and Ethics Framework.

We operate in accordance with the UK Modern Slavery Act 2015 and our Modern Slavery Statement is published annually on our website. Our Code of Conduct is fully aligned with the requirements of the Act. Mainstream condemns human trafficking and modern slavery in all its forms. We are committed to ensuring that such practices have no place within our own operations or within the operations of our external stakeholders.