
Complii, formerly known as Compliance Group, and a provider of building compliance services, has announced the acquisition of Capital Fire Doors, a London-based specialist in passive fire protection. This strategic move further enhances Complii’s building compliance offering by integrating a comprehensive suite of fire safety services and expanding its UK-wide operational reach.
Capital Fire Doors is renowned for delivering a full range of third-party accredited passive fire protection solutions. Aligning with Complii’s core value of excellence, Capital Fire Doors focuses on delivering to the highest standard, ensuring buildings and customers are safe and compliant.
Their comprehensive services cover fire door installation and repair, fully accredited fire door surveys and inspections, pre-planned fire door maintenance, fire stopping and compartmentation, steel and aluminium doors and screens, and automatic opening doors.
The company serves a diverse client base across the UK, including residential, educational healthcare, hotels and leisure, and various commercial and industrial buildings.
Capital Fire Doors will continue to operate under its current leadership, maintaining its strong commitment to client relationships. Commercial Director, Michael Fisher, and Operations Director, Nathan Cranstoun, along with the entire team, will remain in their current roles.
Commenting on the acquisition in a joint statement, Michael Fisher and Nathan Cranstoun said: “This is an exciting milestone for our team and our customers. Joining Complii gives us the scale and support to grow while continuing to deliver the high standards our clients depend on. It also opens the door to an even broader range of building compliance solutions, creating a great fit and a bright future for everyone involved.”
Sarah Dixon, chief executive of Complii, added: “The addition of Capital Fire Doors further strengthens Complii’s capabilities in passive fire protection at a time of rising demand for these services and growing importance for building safety and compliance. We’re delighted to welcome Michael, Nathan, and the entire Capital Fire Doors team on board”.
Scott McKay, managing director of Complii’s Fire Division, commented: “Capital Fire Doors brings exceptional accreditation and geographic strength in London and the South East, immediately enhancing our operational footprint and specialist capabilities. Integrating their expertise solidifies our position as the partner of choice for clients seeking high-quality, comprehensive fire compliance solutions across the UK.”
The acquisition reinforces Complii’s commitment to being a fully committed partner, dedicated to achieving shared safety goals. The integration of Capital Fire Doors will enable Complii to offer an even more comprehensive and seamlessly delivered suite of passive fire protection and compliance solutions to building owners and operators nationwide.

