Pettit Singleton Associates is a sustainable engineering consultancy for the construction industry, specialising in Building Services, Mechanical and Electrical Engineering, Energy Consultancy, Project Management and Compliance.

PSA has been an invaluable partner in our capital replacement projects, providing expert guidance and meticulous attention to detail. Their team, particularly Norman and Gavin, has consistently demonstrated a deep understanding of our needs and a commitment to ensuring compliance and safety. Their generosity with knowledge and ability to explain complex engineering concepts in layman's terms have been instrumental in our successful collaboration. Trust is paramount in our industry, and PSA has earned ours through their professionalism, reliability, and proactive approach. Working with them continues to be a pleasure, and I wouldn't hesitate to recommend them for any mechanical and engineering consultancy needs.

The Estates Department at the University Hospitals of Morecambe Bay NHS Trust has had, and continues to have, a close working relationship with PSA for more than 20 years. This partnership is built on the professionalism of the staff within PSA and their ability to quickly understand the issues and the challenges we face and generate suitable solutions. For many years, the Trust has appointed PSA as its Health Technical Memorandum Authorising Engineers (HTM AEs) and In this role they are the subject matter experts (SMEs) for a variety of engineering and healthcare engineering disciplines. There technical ability and project management abilities are excellent but where they truly excel is in their ability to understand and react to unusual issues, urgent issues and issues we haven't faced before.

The muti-discipline Building Engineering Services that PSA has provided ALECS with since their appointment in June 2023 have been exemplary. Working in an Extra Care Home environment can be, and often is, one of the most challenging environments in which to work. This requires a high degree of technical competence and effective communication skills. PSA have delivered nothing less to all tasks they have been charged with over the twelve months we have worked with them.

We receive first class information and service; this is why we have a long standing relationship which has trust at its centre.

As Head of Estates at North Cumbria Integrated Care, I can confirm PSA has diligently performed Authorising Engineer duties across our sites, demonstrating a deep understanding of our facilities that has significantly streamlined our audit processes. What sets PSA apart is their expertise and approachability. Their team possesses authoritative knowledge in their field, yet they present it in a manner that is never overbearing. This has created a collaborative relationship where we work together to develop effective solutions. I appreciate the extensive subject matter expertise that PSA brings to the table. Many of their Authorising Engineers have held positions within the NHS, bringing practical, hands-on experience to their role. Their familiarity with our sites, coupled with their industry knowledge, results in time and resource efficiencies that we greatly value. PSA act as partners, working alongside us to navigate challenges and implement improvements.

The Estates Department at the University Hospitals of Morecambe Bay NHS Trust has maintained a strong and ongoing collaboration with PSA. This long-standing partnership is down to PSA's expertise and their ability to swiftly grasp and address our unique challenges with quick and creative solutions.

The muti-discipline Building Engineering Services that PSA has provided ALECS with since their appointment in June 2023 have been exemplary. Working in an Extra Care Home environment can be, and often is, one of the most challenging environments in which to work. This requires a high degree of technical competence and effective communication skills. PSA have delivered nothing less to all tasks they have been charged with over the twelve months we have worked with them.

"PSA has been a fantastic partner, particularly due to their ability to build strong relationships with our Internal Stakeholders, taking the time to fully understand the university’s requirements. Their senior-level engagement means they can make confident decisions while providing appropriate technical challenge when needed. What sets them apart is their practical approach, responsiveness, and willingness to take the initiative, engaging directly with our internal stakeholders. PSA are diligent, reliable and very client focused.”

“PSA have consistently delivered first-rate M&E design consultancy services for our mental health projects. Their responsive, approachable team, particularly Karl, Stephen and the healthcare team, demonstrate deep understanding of NHS and mental health facilities requirements. What sets PSA apart is their transparent approach and their willingness to be flexible when project demands change. The team's proactive problem-solving and quick response times have been invaluable across multiple schemes, making them one of our preferred M&E consultants for mental health projects.”

PSA have been a trusted partner for us since the first iteration of Crow Wood over 20 years ago, through to the more recent £20m transformation. They have provided design consultancy for our building services for 90% of the development from the initial gym, squash and tennis courts, swimming pool, equestrian centre and hotel. PSA ensure our construction work is completed to the highest of quality, safety and accuracy. We trust their advice on all building services, they respond quickly and professionally to issues and do all they can to provide honest and direct advice to help us achieve the high-quality finish at the right price.