Cat B Fit Out

Workspaces defined by quality and detail.

For over 70 years, we’ve delivered Cat B spaces for some of London’s leading landlords and occupiers, aligning fit out with the long-term ambitions of each asset. Our focus goes beyond surface-level design; we consider materiality, detailing and performance from the outset, creating spaces that feel refined, stand up to use and remain relevant over time.

That quality is defined by what sits behind the finish. From the integration of services to the precision of detailing, every element is resolved with buildability and longevity in mind. It’s this considered approach - balancing design intent with technical performance - that results in spaces that not only look exceptional, but continue to perform throughout their lifecycle.

Design and delivery, fully aligned

Intelligent coordination and fluency of language between our design managers and the architect, attention to detail means our delivery moves quickly without losing quality.

"The Cat B fit-out on the fourth floor is the undeniable highlight. Collins upheld a consistently high standard of workmanship across all finishes. This project was completed on programme, received strong market feedback, and is regarded by The Crown Estate as a clear success."
Sunette Verster, Client Project Manager, The Crown Estate

Our Cat B offer

Quality

Uncompromising on quality - materials, detailing, performance and longevity considered from day one.
Bespoke Product

A solution tailored to the building, the market, and the asset lifecycle.
Our Partners

Tier-one supply chain only.
Experience

Proven delivery with occupied buildings and minimal disruption.