About Us

“Quality that stands the test of time… 25 years and counting”

Founded in 2001 by Dr Andrew Waddell, Tower Mains Ltd is a UK-based, globally operating GxP consultancy now in its 25th year. We provide bespoke audit, consultancy, training, and quality assurance services to the clinical, healthcare, life sciences, biotechnology, medical device, and scientific industries.

Over the past 25 years, we have worked with more than 450 organisations across GLP, GCP, GMP, GCLP, and non-regulated research, and our diverse team brings over 200 years of combined global regulatory experience spanning healthcare, academia, start-ups, big Pharma, and medical devices.

While audit remains a core foundation of our work, our capabilities have evolved beyond traditional audit provision. By partnering with Tower Mains, you gain access to specialists across the GxPs through a single contract. A named Project Lead is on hand to support your routine needs and connect you directly with our wider expert team, ensuring you receive the right answers when you need them, all delivered with guaranteed Tower Mains quality. Our approach is pragmatic and proportionate, tailored to your current needs while keeping future pathways in view.

We provide support in areas including:

  • QS build, implementation and routine maintenance

  • GXP audits, from single events, annual audit schedules to full vendor oversight programmes

  • Provision of training from bespoke courses to routine updates and everything in between

  • QA oversight from expert ad hoc review and advice to full QA unit and programme support

  • Inspection preparedness and mock inspection

Our services can be delivered remotely or on-site, are fully flexible, and tailored to your organisation’s needs. Whether you require a complete audit programme, strategic QA partnership, inspection preparation, or targeted consultancy, we work collaboratively to ensure quality is embedded, effective, and inspection ready.

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Why choose Tower Mains?

Global GxP Expertise

Access experienced auditors, quality professionals and subject matter experts across the GxP landscape, from clinical and laboratory environments to manufacturing, devices and research. We bring industry experience and specialist insight to help you address quality and compliance priorities.

Regulatory and Technical Insight

Our team brings extensive, real-world experience across global regulatory frameworks, including ICH, FDA, EMA and MHRA requirements. We help organisations interpret regulatory expectations, focus on what matters, assess risk and make informed quality decisions with confidence.

Flexible Quality Solutions

From single audits and annual audit programmes to vendor oversight, QA support and inspection readiness, we provide the right support for your objectives and risk profile. Services can be delivered in person, remotely or through a hybrid approach.

Practical. Proportionate. Collaborative.

We believe quality should enable your organisation, not add unnecessary complexity. Working alongside your teams, we bring an objective perspective, provide constructive challenge and help strengthen quality systems through sustainable improvements.