Office Fit Out London

Over two decades of office fit outs across London; from boutique private equity suites in Mayfair to 50,000 sq ft headquarters in the City. One team, one contract, from design through to handover.

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WHY LONDON BUSINESSES CHOOSE K2

London Office Fit Out Expertise

London’s commercial property market moves fast and demands precision. Tight build programmes, landlord approvals, listed building constraints, complex M&E in older buildings, and multi-floor, phased installations while teams stay operational are just some of the realities of fitting out offices in the capital.

K2 Space has been delivering office fit-outs across Central London since 2003. We work with occupiers, landlords, and property advisors to create workplaces that attract talent, support productivity, and reflect the standards your clients and people expect.

→Cat A and Cat B fit outs
→Design & build under a single contract with one team, one point of accountability
→Occupied refurbishments with phased delivery to minimise disruption
→Furniture procurement as a MillerKnoll Certified Dealer
→Aftercare and ongoing facilities support post-handover

Office Fit Out Across Central London

Mayfair & St James’s

Mayfair and St James’s have become our busiest client base in London, and a location where we thrive. From boutique financial services and private equity to asset management and family offices. We deal with all sorts of projects here, from working with Grade II-listed buildings and high-specification finishes to the kind of discreet project delivery these clients expect. Recent projects include PJT Partners and Eastdil Secured.

City of London

The City has consistently been one of our most active areas, and the variety of work keeps us interested. From global banks, insurers, and international law firms across the Square Mile, we’re used to the realities here of large floor plates, complex M&E in older buildings, and 24/7 build programmes to hit tight lease deadlines. Clients here include William Blair and Latham & Watkins.

Fitzrovia & Marylebone

Fitzrovia and Marylebone have become a real stronghold for us, with a client mix that leans heavily toward media, creative, and tech. The briefs tend to be design-led with exposed services, flexible layouts, and workplaces that genuinely help attract and keep talent. We’ve delivered projects here for Netflix, Adobe, Dentsu, and Roald Dahl.

Clerkenwell & Shoreditch

With our offices in Islington, Clerkenwell and Shoreditch is close to home turf. Over the years, we’ve built up a solid track record across this corridor and love working with character buildings and occupiers who want a workspace that says something about their brand, not just a functional office space. Our projects here include Beats, Snap Inc.

Midtown & Holborn

Legal sector heartland and part of London’s growing tech belt, Midtown & Holborn form a large part of our workload. Traditional firms are modernising their workspace to compete for talent, and we’re seeing more professional services firms relocating here from traditional City addresses. A lot of the work is phased refurbishments in occupied buildings, where keeping the business running matters as much as the end result. Recent clients here include Criteo and Vouchercodes

Victoria & Westminster

Government adjacency, corporate headquarters, and NGOs. These are established occupiers who need workplaces that balance profile with practicality, and a delivery partner who understands the scrutiny that comes with it. In the heart of SW1, our clients include Rolls-Royce & Partners Finance, IMSO, and BMO.

— MARKET CONTEXT

The London Office Market in 2026

If you’re planning a London office fit out this year, you’re not alone. The market is in genuine recovery and the drivers are structural.

74%

Grade A Leasing

Of London leasing in 2025 was Grade A space — a record. Occupiers are choosing quality, and fit out standards are rising.

31%

Financial Services

Insurance and financial services accounted for 31% of Central London take-up. K2’s core sectors, and the demand is accelerating.

55%+

Sub-10k Sq Ft Deals

Of West End transactions were under 10,000 sq ft — exactly the project size where a single design & build partner makes sense.

80%

MEES Compliance Gap

Of London’s office stock sits below the EPC B threshold required by April 2030. Thousands of landlords and tenants will need fit out works.

— COST GUIDANCE

London Office Fit Out Costs

London fit out costs vary by specification, building condition, and scope of M&E works. Here are benchmark figures for 2026.

BASIC

~£90

per sq ft

Shell improvements, basic partitioning, standard M&E, carpet and paint. Suitable for short-term leases or budget-conscious occupiers who need functional space quickly.

MID-LEVEL

~£135

per sq ft

Full Cat B fit out with bespoke joinery, AV integration, quality finishes, branded reception, and kitchen. The most common specification for professional services firms in London.

HIGH-SPEC

£190+

per sq ft

High-end design, specialist materials, advanced AV and acoustic treatment, bespoke furniture, and feature lighting. Financial services, legal, and luxury occupiers in Mayfair and the City.

Includes construction, AV and furniture. Based on recent London projects.

Read Our Full Cost Guide

— LONDON PROJECTS

London Office Fit Outs by K2 Space

A selection of recent projects — different areas, different sectors, different briefs.

US investment firm London office fit out — Mayfair

Mayfair · Mix Awards Finalist

INVESTMENT

US Investment Firm

Mayfair, W1 · 2,450 sq ft · Design & Build

An adaptive reuse project inside a restored 1930s building — retaining original architraves and period panelling alongside bespoke joinery and a discreet “vault” meeting room. Mix Interiors Awards 2025 finalist, Project of the Year.

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DTRE office fit out at 25 Argyll Street — West End

West End · BREEAM

REAL ESTATE ADVISORY

DTRE

25 Argyll Street, W1 · 11,000 sq ft · Design & Build + Furniture

Sustainable Design Awards 2024 finalist achieving BREEAM “Very Good”. Biophilic design, auditorium with bleacher seating, barista-style reception, and private dining area. A project that balanced premium aesthetics with practical, everyday functionality.

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Dentsu Edinburgh office fit out by K2 Space

Edinburgh · Design & Build

MEDIA & ADVERTISING

Dentsu

The Stamp Office, Edinburgh · 7,000 sq ft · Design & Build + FF&E

A design & build project inside a listed Georgian building on Princes Street. Unified mixed teams under the “One Dentsu” concept while maximising furniture reuse in line with Dentsu’s sustainability guidelines. Modular meeting spaces and a mezzanine client lounge.

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PJT Partners London Mayfair office fit out

Mayfair · 48,000 sq ft

FINANCIAL ADVISORY

PJT Partners

Mayfair, W1 · 48,000 sq ft · Design & Build + Furniture

A complete workplace transformation for a global financial advisory firm’s London headquarters. Design, construction, bespoke joinery, AV integration, and MillerKnoll furniture throughout — delivered end-to-end under a single contract.

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Eastdil Secured Mayfair office fit out by K2 Space

Mayfair · Investment Banking

INVESTMENT BANKING

Eastdil Secured

Mayfair, W1 · Furniture Consultancy & FF&E

An elegant office transformation for a leading US real estate investment bank’s London headquarters in Mayfair. High-quality materials, curated finishes, and furniture specified to reflect the firm’s prestige and client-facing standards.

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Netflix London office workspace by K2 Space

Fitzrovia · Multi-city

TECHNOLOGY & ENTERTAINMENT

Netflix

London, Paris, Madrid · 60,000 sq ft · Furniture Consultancy & FF&E

A multi-city furniture and workspace programme for the global streaming platform. Privacy pods, teaming benches, and collaboration areas — designed to reflect the company’s culture across three European offices simultaneously.

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