Office Fit Out Services

CAT B Fit Out, Done Properly

End-to-end CAT B fit outs across the UK. Backed by free site surveys, free CAD design, and a team that's been delivering outstanding offices since 2009.

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Office Fit Out Services

From Blank Canvas to Beautiful, Functional Office. Without the Stress

Most businesses taking on a new commercial space know exactly what they want. They just don’t know how to get there, and that’s precisely where we come in.

Taking on a new office space is one of the most significant decisions a business makes. You’ve signed the paperwork, you’ve got the keys, and now you’re staring at bare concrete floors, exposed ceilings, and a shell of a room that’s supposed to become the place your team spends most of their working week.

Getting a CAT B fit out right means more than choosing paint colours and ordering furniture. It means space planning that makes every square foot count, partitioning that balances privacy with collaboration, and a finished environment that genuinely reflects your business, and actually works for the people inside it.

Here at ACI, we’ve been delivering CAT B office fit outs since 2009. We’ve worked with businesses of every size, from growing SMEs taking their first leased space to national brands refitting multi-floor commercial premises. In every case, our job is the same: take your CAT A space and turn it into somewhere your team wants to come in to.

We handle the entire process: Design, planning, project management, installation, and aftercare, so you don’t have to manage multiple contractors, interpret technical drawings, or worry about whether your fit out will be delivered on time and on budget.

And because we always start with a free site survey and free CAD plans, you can see exactly what your new office will look like before you commit to a single penny.

Office Fit Out Services

CAT B Fit Outs Across the UK

ACI is based in Sandiacre, Nottingham, which puts us at the heart of the East Midlands and within straightforward reach of most of the UK’s major commercial centres.

We carry out CAT B fit outs across Nottingham, Derby, Leicester, Birmingham, Sheffield, and London, and we regularly work with businesses relocating to new premises, expanding into additional floors, or finally doing justice to a space that’s never quite worked for them.

If you’re taking on a new commercial space anywhere in the UK and you need a CAT B fit out specialist who will treat your project with the same care as every other job we deliver, not pass it off to a subcontractor and hope for the best, we’d like to hear from you.

Call us on 0115 939 7572 or complete the form below for a free, no-obligation consultation.

CAT B Fit Outs Across the UK

Office Fit Out Services

What's Included in a CAT B Fit Out?

  • Space Planning & Design
    Before a single product is specified or a trade is booked, we plan your space properly. Using your CAT A drawings and our site survey notes, we produce a detailed CAD layout showing exactly how your new office will be arranged with workstations, meeting rooms, breakout areas, storage, circulation routes, and all. We design around your headcount, your growth plans, and how your people actually work.
  • Partitioning, Flooring & Ceilings
    From partitions to flooring to ceilings, we supply and install every internal element under one roof. That means frameless glass and solid demountable partitions (acoustic and fire-rated where needed), commercial flooring specified zone by zone — from hard-wearing carpet tiles and LVT to polished concrete — and ceilings to suit the space, whether a standard suspended grid, an exposed soffit, or a feature treatment for reception and breakout areas.
  • Kitchens, Meeting Spaces & Reception Areas
    We create the spaces that bring an office to life. That includes fully fitted kitchens, tea points and breakout areas — with all the plumbing, electrical and joinery behind them — plus meeting rooms of every size, from informal huddle pods to formal boardrooms with integrated AV, acoustic treatments and bespoke joinery. And because your reception is the first thing every client and visitor sees, we design and install those too: reception desks, feature walls, branded graphics, seating and lighting that make the right impression.
  • M&E, Decoration, and Office Furniture
    We handle the finishing layers that pull everything together. That means all internal decoration — painting, wallcoverings and decorative finishes — worked to your brand guidelines with branded colour, graphics and wayfinding built in. Alongside trusted M&E partners, we coordinate lighting, power, data cabling, heating and cooling, and fire and safety compliance within the main fit out programme, so there are no delays or clashing trades on site. And we manage office furniture end to end — desks, seating, storage, meeting and reception pieces — procured and installed to your budget, ready for day one.
What's Included in a CAT B Fit Out?
Creating Fabulous CAT B Spaces Since 2009 Since our inception, we've worked with some of the UK's most well-known and loved brands to create their amazing spaces.

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Get a Free CAT B Fit Out Quote

Whether you have a clear brief or you're still at the ideas stage, we're happy to talk it through. Fill in your details and one of our specialists will be in touch. No pressure, no hard sell, just honest advice on what's possible for your space and budget.

We Work Across
Nottingham Derby Leicester Birmingham Sheffield London Manchester The Wider UK

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Helping companies large and small create inspired workspaces since 2009

How It Works

CAT B Fit Outs Done Right

01
Planning
When it comes to your workspace, we’ll help you break the space down into functional requirements and the core components that need to work together. Our design team will help you maximise your space and ensure that it’s been though through properly.
02
Designing
We provide a full office design service, which includes detailed surveys, CAD plans, mood boards and amazing 3D visualisations. We do this to make sure that the design is developed to your needs and to enable you to see the full potential of your workspace.
03
Fitting Out
Our experienced team of office fit out professionals will take the plans we have created and complete your new office on time and on budget. Whether you are moving into the new space, or simply creating an office for an expanding workforce, we can help.
04
Aftercare
Once the work is complete, your project manager will go around and make sure everything meets our high standards. As soon as they’re happy, they’ll show you around and hand you the keys to your new space!

Get in touch to explore our range of CAT B fit out services. Our expert team of designers and fitters are on hand to work with you.

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★★★★★ Rated the top fit out company in the Midlands on Google Reviews

Ready to Create Your Dream Workspace?

Use our online project planner to tell us about your requirements and find out how we can help you transform your working environment.