Ambar Kelly

What Ambar Kelly does

Ambar Kelly Ltd is a UK-based private limited company (founded 2010, headquartered in Welwyn Garden City) that designs and manufactures RiserSafe, a patented modular steel riser flooring system for multi-storey buildings. The RiserSafe product integrates eleven functions into a single bespoke unit - permanent formwork, fall protection, smoke and flame spread prevention, load bearing up to 2.5 kN/m2, MEP service routing points, fixing points for separating and fire walls, and casting/weathering - replacing the fragmented combination of GRP grating, scaffolding, and temporary fire stopping traditionally used in riser shafts. Units are manufactured in-house at the Welwyn Garden City facility on fibre laser and plasma cutting machines by coded welders, with UKCA certification to execution class 2 (valid to August 2028) and ISO 9001:2015 quality accreditation.

The company sells through specification-driven enterprise sales targeting architects, structural engineers, M&E consultants, principal designers, and quantity surveyors, with main contractors and frame subcontractors acting as the procurement counterparty. Pricing is fixed at project outset and inclusive of 3D Tekla BIM modelling, coordination meetings, site attendance, and as-built documentation. Ambar Kelly holds two UK patents (GB 2429021B, GB 2443693B), is an ASFP-approved member since June 2022, holds FORS Gold accreditation, and is certified carbon neutral. Its customer base includes Skanska, Mace, Lendlease, Multiplex, McLaren, and Kier across London high-rise and UK commercial construction projects. The portfolio was expanded in January 2026 with the launch of OmegaRiser, a second modular riser product variant.

Revenue mechanics are project-based one-time product sales bundled with professional services (BIM modelling, coordination, site attendance), sold direct to enterprise contractors on multi-year project cadences. The company is family-owned, with no disclosed external funding or institutional investors, and operates exclusively in the United Kingdom.

Name

Ambar Kelly

Legal name

Ambar Kelly Ltd

Website

https://ambar-kelly.com

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Riser Flooring Systems

NAICS

Sheet Metal Work Manufacturing (332322), Fabricated Structural Metal Manufacturing (332312), Architectural and Structural Metals Manufacturing (3323)

SIC

Fabricated Structural Metal Products (3440), Miscellaneous Fabricated Metal Products (3490)

akta.pro primary industry

Architectural & Miscellaneous Metals (Stairs, Railings, Ladders) (IMADACAE)

Keywords

• Modular riser flooring
• Riser zone solutions
• Fall protection systems
• Fire stopping products
• Construction safety manufacturing

Headquarters

HQ city

Welwyn Garden City

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. RiserSafe Product Sales: Bespoke modular riser flooring units manufactured and sold directly to contractors. Price is fixed at project outset and includes: permanent formwork, covered openings, smoke/flame prevention, structural support beams for fire walls, dropped plate tray for fire compound, unlimited factory-formed holes, sacrificial lids, extended roof units for weather protection.
2. 3D Tekla Modeling Services: 3D Tekla modeling including coordination with structural frame contractor, M&E contractors, dry lining contractor, roofing contractor, main contractor and design team to provide clash-free designs and update the project federated model.
3. Site Coordination and Technical Support: Attendance at riser coordination meetings, site attendance after initial installation to assist M&E and main contractors, final walk down report, and contribution to operational and maintenance manual including as-built drawing documentation.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

Ambar Kelly designs and manufactures bespoke modular steel riser flooring systems (RiserSafe® and OmegaRiser®) for riser shafts in multi-storey buildings. Each unit integrates 11 construction and safety functions—fall protection, smoke/flame spread prevention, permanent formwork, load bearing up to 2.5 kN/m², and MEP service routing—manufactured to order at its Welwyn Garden City facility and delivered to UK construction sites. The company also provides 3D Tekla BIM modeling, clash coordination, site attendance, and as-built documentation bundled with the product.

Product overview

Ambar Kelly offers a unified portfolio of modular riser flooring solutions centered on two core patented products: RiserSafe® and OmegaRiser®. RiserSafe® is the primary flagship product—a total riser zone solution providing 11 functions across a construction site including fall protection, fire stopping, permanent formwork, and MEP service accommodation. OmegaRiser® is a newer product variant sharing the same core purpose of riser shaft safety. Both products are bespoke, manufactured off-site in the Welwyn Garden City facility, and work with all construction frame types (concrete, steel, precast, post-tensioned). The portfolio includes specialized accessories such as electrical and mechanical soaker plates for sealing service penetrations.

Differentiator

Problem solved

Functional benefit

Brands

• RiserSafe®: A total riser zone solution - bespoke modular riser flooring products for building riser shafts in multi-storey properties, providing fall protection and fire prevention.
• OmegaRiser®

Products and services

• RiserSafe® RiserSafe® is a patented, bespoke modular steel riser flooring product for building riser shafts in multi-storey properties. Each unit integrates 11 functions—permanent formwork, hand rail elimination, smoke/flame spread prevention, load bearing up to 2.5 kN/m², formwork for horizontal fire protection, fixing points for separating walls, fire walls and heavy M&E services, casting/weathering for roof, and M&E design drive to early completion. Fire tested at BRE for 90 minutes at 1000°C with 120-minute rating when combined with fire stopping compounds. Sold to UK main contractors and frame subcontractors across commercial, residential, mixed-use, education, healthcare, and high-rise projects.
• OmegaRiser® OmegaRiser® is a modular riser flooring product variant from Ambar Kelly designed to work with all frame types (concrete, steel, precast, post-tensioned), providing riser zone safety and fire protection similar to RiserSafe®. It is a bespoke, off-site manufactured technical riser flooring product offering from the company.

Quantifiable outcome

• Over £300k saved on One Crown Place project by eliminating alternative works, materials and processes
• +4 more outcomes

Named customers15 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Trimble (Tekla)coreTechnology or IntegrationAmbar Kelly uses Tekla Structures software from Trimble for 3D BIM modeling. Imports IFC files from client BIM models and coordinates RiserSafe designs with structural and M&E models, transferring coordinated models back to the project federated model.
• Association for Specialist Fire Protection (ASFP)coreOthersAmbar Kelly is an approved member of ASFP since June 2022, demonstrating compliance with fire protection industry standards and commitment to building safety.

Scale indicators14 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Siderise Group: UK manufacturer of fire and acoustic insulation products for construction, including compartmentation and penetration sealing systems that overlap with RiserSafe's fire stopping function in riser shafts.
• Bilco UK: Manufactures floor and ceiling access doors, hatches, and riser access solutions for commercial buildings, serving the same multi-storey construction specification chain as Ambar Kelly.
• Profloor Technology / ALTRAD: Acquired by ALTRAD, Profloor Technology produces modular riser flooring and access solutions for high-rise construction, the closest direct competitor to Ambar Kelly's RiserSafe in the UK market.

Broad incumbents

• Lindapter International: UK manufacturer of steelwork clamping systems and structural connections used in commercial construction, serving the same specification chain for multi-storey buildings.
• Tata Steel UK: Major UK structural steel and metal decking manufacturer whose ComFlor and structural ranges compete in the floor systems category adjacent to RiserSafe.
• Hilti (Great Britain): Global construction technology and fastening solutions provider selling fire stopping, modular installation, and specification-driven products to the same Tier 1 contractor customer base.
• Promat (Etex): Part of Etex Group, Promat is a major manufacturer of passive fire protection boards and systems used in riser shaft compartmentation, overlapping with the fire stopping and wall fixing functions of RiserSafe.
• Kingspan Group: Global building envelope manufacturer with insulated panels, structural products, and floor decking that touches on the modular floor and structural categories Ambar Kelly serves at much larger scale.
• Simpson Strong-Tie: Global manufacturer of structural connectors, fasteners, and engineered solutions for construction, selling into the same specifier and contractor base as Ambar Kelly.

Emerging players

• CCS (Construction Card Solutions) / RiserSafe competitors in access platforms: Smaller specialist firms offering temporary flooring, edge protection, and riser access solutions in the UK high-rise market, providing alternative or substitute approaches to the RiserSafe integrated solution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ambar Kelly