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N1, EC1, N7, N19

Office fit out and refurbishment companies in Islington

Clerkenwell is the centre of London's fit out and furniture industry as well as an office market; more design led fit out firms are based here than anywhere else in the capital, and the annual Clerkenwell Design Week fills the streets. The stock is converted warehouses and print works with exposed structure, high ceilings and character that clients pay for and that hides expensive mechanical problems. Old Street and the Angel add more conventional floorplates.

Head office in the borough

4 firms based in Islington

Resolved from the registered or trading address on each profile. Being based here does not mean a firm only works here; every firm in the directory covers London.

Boutique
AS
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AW Spaces

Under 5k sq ft

Sustainability specialist D&B. Biophilic design. Green materials. Old Street tech hub location.

Fit out, boutique band.

Projects
Under 5k sq ft
Client size
Up to 40 staff
Budget
£50k to £500k
Sustainable Office Fit OutDesignGreen Office Design
Public data, March 2026Profile
Mid Market
FF
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Form Fit Out

Est. 2006

Independent. Education/university/school fit outs. Change of use projects. Based in Clerkenwell.

Refurbishment led, mid market band, trading since 2006. Names Patrizia and Cushman & Wakefield among its clients.

Projects
5k to 30k sq ft
Client size
40 to 250 staff
Budget
£300k to £5m
Office Fit OutRefurbishmentFurniture+2
Public data, March 2026Profile
Mid Market
KS
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K2 Space

Est. 2004

Furniture consultancy in DNA. Financial services and legal sector strength.

Refurbishment led, mid market band, trading since 2004, ~15–16 staff.

Projects
5k to 30k sq ft
Client size
40 to 250 staff
Budget
£300k to £5m
Office DesignFit OutRefurbishment+4
Public data, March 2026Profile
Mid Market
WG
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Wagstaff Group

5k to 30k sq ft

Right first time mindset. Manages multiple trades in house. Multi year client relationships.

Design and build, mid market band. Names Spaces/IWG Plc and AutoTrader among its clients.

Projects
5k to 30k sq ft
Client size
40 to 250 staff
Budget
£300k to £5m
Turnkey Fit OutInterior Fit OutMulti Trade Management
Public data, March 2026Profile
Working in Islington

London wide firms suited to Islingt. projects

Ordered with enterprise and mid market firms first, because central London projects skew larger. All 62 London wide firms are in the full directory.

Enterprise
ST
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Structure Tone

30k+ sq ft

Major global player in corporate fit out with significant London operations.

Projects
30k+ sq ft
Client size
250+ staff
Budget
£5m and above
Corporate Office Fit OutConstruction Management
Public data, March 2026Profile
Enterprise
WD
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Willmott Dixon Interiors

Est. 1852

Heritage preservation, sustainable refurbishment, public sector. 500,000+ sq ft delivered in prestigious London locations.

Projects
30k+ sq ft
Client size
250+ staff
Budget
£5m and above
Cat B Office Fit OutCommercial RefurbishmentDesign & Build+1
Public data, March 2026Profile
Enterprise
OV
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Overbury

Est. 1942

UK's leading fit out specialist. 91% net promoter score. Projects up to £200m.

Projects
30k+ sq ft
Client size
250+ staff
Budget
£5m and above
Cat A Fit OutCat B Fit OutDesign & Build+3
Public data, March 2026Profile
Mid Market
BW
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BW: Workplace Experts

Est. 2000

Defect free delivery ethos. Projects £1m to £50m+. Fiercely independent. Directly employs many tradespeople.

Projects
5k to 30k sq ft
Client size
80 to 400 staff
Budget
£1m to £10m
Cat A RefurbishmentCat B Fit OutCampus Refurbishment+2
Public data, March 2026Profile
B CorpMid Market
AF
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Area (Fourfront Group)

Est. 2000

Coworking/flex space, education, laboratory fit out. Founders of The United Workplace global network. 10+ offices across Europe.

Projects
5k to 30k sq ft
Client size
80 to 400 staff
Budget
£1m to £10m
Workplace ConsultancyDesignFit Out+3
Public data, March 2026Profile
Mid Market
PR
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Peldon Rose

Est. 1987

End to end bespoke design & build. In house M&E team. 30+ years London specific experience.

Projects
5k to 30k sq ft
Client size
80 to 400 staff
Budget
£1m to £10m
Workplace StrategyDesign & BuildCat A Fit Out+6
Public data, March 2026Profile
B CorpMid Market
IN
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Interaction

Est. 1990

Sustainability first. £150k annual sustainability commitment. VR walkthroughs. Flex/coworking design.

Projects
5k to 30k sq ft
Client size
80 to 400 staff
Budget
£1m to £10m
Office DesignFit OutWorkplace Strategy+2
Public data, March 2026Profile
Enterprise
MM
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M Moser Associates

30k+ sq ft

Global workplace strategy and design. Biophilic design, WELL and green building certification. Research driven approach.

Projects
30k+ sq ft
Client size
250+ staff
Budget
£5m and above
Workplace StrategyInterior DesignOffice Fit Out+2
Public data, March 2026Profile
Enterprise
CW
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Crown Workspace

Est. 1965

Global operation with 60+ years' experience. B2B focused.

Projects
30k+ sq ft
Client size
250+ staff
Budget
£5m and above
Workplace ConsultancySpace PlanningDesign+4
Public data, March 2026Profile

Typical stock in Islington: Converted warehouses, design led occupiers, fit out firms' home turf.

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