ISWUK LTD
ISWUK LTD is a UK architectural metalworks specialist designing, supplying, and installing bespoke balustrades, staircases, balconies, and fire-rated decking for residential developers, commercial contractors, and architects across Southeast England and Greater London.
- Company typePrivate
- Founded-
- HeadquartersAshford, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
What ISWUK LTD does
ISWUK LTD is a privately held UK architectural metalworks specialist headquartered in Ashford, Kent (previously operating as Interstellar Steelworks Limited, rebranded in 2021). The company designs, supplies, and installs bespoke balustrades, staircases, balconies, decking, handrails, entrance canopies, and related architectural metalwork using glass, stainless steel, aluminium, mild steel, and timber components. Its work spans both interior and exterior applications across residential properties, commercial developments, education facilities, heritage buildings, and leisure venues.
ISWUK offers four flexible engagement models — design-only, supply-only, installation-only, and full turnkey project packages — with building regulation compliance and planning application support embedded in the delivery process. The company holds proprietary expertise across seven balustrade material options and multiple fire-rated decking systems (including Ryno ADB-60 aluminium and Exadeck porcelain), enabling it to address both new-build and post-Grenfell remediation demand. Customer reach is built through three primary channels: direct sales to homeowners and developers via a quote-based motion, appointment as a specialist subcontractor by main contractors (8build, Kench Construction, HG Construction, Bulb Interiors), and specification-driven engagement with architects.
Commercially, the company operates a sales-led, project-based revenue model with quote-based pricing and no publicly disclosed revenue figures. Its geographic focus is the Southeast of England — Kent, Surrey, Essex — and Greater London, with dedicated SEO landing pages for each county and several towns. The business is supported by strategic supply partnerships with AliDeck and OnLevel, which generate reciprocal referrals and are publicly endorsed by supplier leadership. The company has no disclosed headcount but states over 35 years of combined team experience and lists 16 live projects on its homepage, indicating an active regional pipeline at sub-enterprise scale.
ISWUK LTD firmographics
Firmographics- Name
- ISWUK LTD
- Legal name
- ISWUK LTD
- Website
- https://iswuk.com
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- ISWUK LTD is a UK architectural metalworks specialist designing, supplying, and installing bespoke balustrades, staircases, balconies, and fire-rated decking for residential developers, commercial contractors, and architects across Southeast England and Greater London.
- Ownership category
- akta.pro rank
ISWUK LTD industry classification
Industry- Product category
- Architectural Metalwork Services
- NAICS
- Ornamental and Architectural Metal Work Manufacturing (332323), Ornamental and Architectural Metal Products Manufacturing (33232), Fabricated Structural Metal Manufacturing (332312), Foundation, Structure, and Building Exterior Contractors (2381)
- SIC
- Fabricated Structural Metal Products (3440), Sheet Metal Work (3444)
- akta.pro primary industry
- Architectural & Miscellaneous Metals (Stairs, Railings, Ladders) (IMADACAE)
- akta.pro secondary industry
- Metal Cladding, Soffits & Trim (Non-Panel Components) (IMADACAM)
Keywords
Where ISWUK LTD is headquartered
LocationHeadquarters
- HQ city
- Ashford
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
ISWUK LTD business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Marketing or Sales
Revenue model
- Design, Supply & Installation of Architectural Metalworks: The primary revenue stream is project-based fees covering the full lifecycle of architectural metalwork projects — from bespoke design through to supply and installation of balustrades, staircases, balconies, and decking. The company offers flexible engagement models ranging from installation-only options to complete turnkey project packages.
- Planning Application Support Services: Additional service revenue generated through assistance with planning applications required for construction projects.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Project-based pricing — custom quote for each engagement |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels6 records
ISWUK LTD product offering
Product offeringCore offering
ISWUK LTD designs, supplies, and installs bespoke architectural metalworks in glass, stainless steel, and aluminium for residential and commercial properties. Core offerings include balustrades, staircases, balconies (Juliet, cantilevered, stacked, and inset), decking, and supplementary items such as facias, cladding, soffits, entrance canopies, ramps, and railings. Projects range from installation-only to full turnkey packages with planning application support and building regulations compliance.
Product overview
ISWUK LTD is an architectural metalwork company specializing in the design, supply, and installation of high-quality glass, stainless-steel, and aluminium solutions. The company's product portfolio centers on five core offerings: balustrades (available in glass, stainless steel, aluminium, and other materials), balconies (including Juliet, cantilevered, stacked, and inset varieties), stairs (bespoke solutions in straight, spiral, curved, and other configurations), decking (aluminium and porcelain fire-rated options), and additional services (facias, cladding, soffits, canopies, and bespoke metalwork). These products are offered both individually and as integrated metalwork packages tailored for residential and commercial projects. The company operates primarily in Kent, London, Surrey, and Essex regions, previously operating as Interstellar Steelworks Limited.
Differentiator
Problem solved
Functional benefit
Products and services
- Balustrades Glass, stainless steel, aluminium, and mild steel balustrade systems for staircases, balconies, terraces, and mezzanine floors in residential and commercial properties. Available in seven material options with various finishes and thicknesses.
- Balconies Complete balcony solutions including Juliet balconies, cantilevered balconies, stacked balconies, and inset balconies for residential and commercial applications.
- Stairs Bespoke staircase solutions including straight stairs, L-shaped, U-shaped, winder stairs, spiral stairs, curved stairs, cantilever stairs, split staircase (bifurcated), and fire escape stairs. Available in stainless steel, timber, and frameless glass.
- Decking Aluminium decking solutions for balconies, terraces, and walkways. Fire-rated options available including Ryno ADB-60 aluminium decking and FIRE DECK Exadeck porcelain decking.
- Additional Architectural Services Additional architectural metalwork including facias, cladding, soffits, entrance canopies, ramps, and railings, plus bespoke metalwork packages for various architectural requirements.
- Metalwork Packages Complete tailored metalwork packages combining staircases, balconies, balustrades, decking, handrails, and bespoke architectural features for residential and commercial projects in London, Surrey, Kent, and Essex.
Quantifiable outcome
- 3 Sheldon Square, Paddington: 660m² aluminium decking + 49 bespoke steel planters + lift threshold plates + balcony ramp plates + steel cover plates delivered as a comprehensive package.
- +5 more outcomes
Companies that use ISWUK LTD
Customer profileNamed customers12 records
Segments3 records
Ideal customer profiles3 records
ISWUK LTD technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
ISWUK LTD partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- AliDeckcoreAliDeck is described as a valued partner of ISWUK. The companies collaborated on 3 Sheldon Square, Paddington, where ISWUK played an integral role in the design and installation of aluminium decking and metalworks across terrace areas. When 8 Build requested one of AliDeck's best installers for this project, AliDeck recommended ISWUK. The relationship is bidirectional, with AliDeck actively referring work to ISWUK and ISWUK serving as a key installation partner in their ecosystem.
- OnLevelcoreOnLevel is described as a long-standing supply partner of ISWUK. Gary Dean, Director at OnLevel, states they have been supplying and working with Interstellar (ISWUK's former name) for some time and are always comfortable recommending them as one of the best installation companies in the UK for balustrades. This is a supply-referral relationship where OnLevel acts as both a product supplier and a referral source.
- RynominorRyno (RYNO®) is a supplier of Ryno ADB-60 aluminium decking products used by ISWUK on remediation projects such as Greggs Wood Road. ISWUK specifies and installs Ryno products as part of its decking solutions.
- Fire Deck / ExadeckminorFire Deck's Exadeck porcelain decking product is used by ISWUK on projects such as Park Road compact roof terrace. ISWUK acts as an installer for the Exadeck product, integrating it into bespoke architectural metalwork packages.
- Next Level Balustrade LimitedminorNext Level Balustrade Limited (Andrew Norris) is referenced as the installation team on the Greggs Wood Road project. ISWUK acted as designer and supplier while Next Level Balustrade provided on-site installation labour.
Scale indicators4 records
Recent moves5 records
Expansion highlights5 records
ISWUK LTD competitors and assessment
Company assessmentBroad incumbents
- CR Laurence (CRL UK): Global architectural hardware and balustrade systems supplier with a UK operation. Overlaps with ISWUK's balustrade category but operates as a broad product supplier rather than a regional specialist installer.
- Bohle UK: European glass hardware and balustrade systems specialist serving the UK market. Overlaps with ISWUK's glass balustrade and architectural metalwork offerings at the product-supply tier.
- Q-Railing (UK): European balustrade systems manufacturer with a UK presence offering standardised glass and metal balustrade products plus installation guidance. Competes at the systems/specification layer rather than the bespoke metalwork niche ISWUK occupies.
Direct peers
- Alpha Rail: UK architectural metalwork specialist producing railings, balustrades, gates, and staircases for commercial and residential construction. Comparable scope and customer base to ISWUK's bespoke metalwork packages.
- Pure Metalcraft: UK fabricator and installer of architectural metalwork including balustrades, staircases, and balconies in stainless steel, mild steel, and glass. Comparable service mix and bespoke project approach to ISWUK.
- Jigsaw Steel: UK architectural and structural steelwork contractor providing bespoke fabrication and installation for residential and commercial schemes. Comparable scale, customer types, and project delivery model.
- CDC United: UK architectural metalwork contractor delivering balustrades, staircases, balconies, and structural steelwork packages to main contractors and developers. Directly overlaps ISWUK's project-based, multi-product metalwork delivery model.
- Sapphire Balconies Ltd: UK-based manufacturer and installer of prefabricated balcony systems and architectural metalwork. Operates a similar design-supply-install model for residential and commercial developers, making it the closest direct competitor to ISWUK's balcony and balustrade offering.
Others
- OnLevel UK: Balustrade hardware supplier and referral partner of ISWUK. Adjacent rather than directly competitive today, but its UK installation network could evolve into a broader competitor over time.
- AliDeck: UK aluminium decking manufacturer and a current ISWUK partner. While not a direct bidder for the same work, AliDeck increasingly offers full design-supply-install packages, positioning it as both supplier and adjacent competitor to ISWUK's decking business.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
ISWUK LTD social profiles
Digital presenceISWUK LTD financial estimates
Financial estimateRevenue estimate
Valuation estimate
ISWUK LTD leadership team
Management profileNumber of profiles
ISWUK LTD funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ISWUK LTD M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ISWUK LTD
What does ISWUK LTD do?
ISWUK LTD designs, supplies, and installs bespoke architectural metalworks in glass, stainless steel, and aluminium for residential and commercial properties. Core offerings include balustrades, staircases, balconies (Juliet, cantilevered, stacked, and inset), decking, and supplementary items such as facias, cladding, soffits, entrance canopies, ramps, and railings. Projects range from installation-only to full turnkey packages with planning application support and building regulations compliance.
Is ISWUK LTD a public or private company?
ISWUK LTD is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ISWUK LTD founded?
ISWUK LTD was founded in -1. It employs 1 to 10 people.
Where is ISWUK LTD based?
ISWUK LTD is headquartered in Ashford, United Kingdom, in the Europe region.
How does ISWUK LTD make money?
Two revenue lines are on record. Design, Supply & Installation of Architectural Metalworks are the primary driver. The others are planning Application Support Services.
Who are ISWUK LTD's main competitors?
Broad incumbents on record are CR Laurence (CRL UK), Bohle UK and Q-Railing (UK). Direct peers are Alpha Rail, Pure Metalcraft, Jigsaw Steel, CDC United and Sapphire Balconies Ltd. Others are OnLevel UK and AliDeck.
Does ISWUK LTD have an API?
No public API is recorded for ISWUK LTD.
What industry is ISWUK LTD in?
ISWUK LTD's product category is Architectural Metalwork Services. Its primary akta.pro industry code is IMADACAE, Architectural & Miscellaneous Metals (Stairs, Railings, Ladders), with a secondary code of IMADACAM, Metal Cladding, Soffits & Trim (Non-Panel Components). Its NAICS code is 332323 and its SIC code is 3440.