Sui Generis

What Sui Generis does

SGI Composites (legally Sui Generis International Ltd.) is a UK-based manufacturer of glass-reinforced plastic (GRP) and fibre-reinforced polymer (FRP) composite solutions, operating from a single Colchester manufacturing facility as a subsidiary of The Milbank Group. The company fabricates bespoke components and assemblies across six core product categories: GRP composite solutions (tanks, architectural mouldings, automotive components, filament-wound pipes), anti-slip systems (walkways, platforms, trench covers, handrails, ladders), industrial composite linings (tank, bund, wall/floor, cooling tower), protective industrial coatings, GRP enclosures and housings, and GRP furniture/planters, with adjacent services in antibacterial GRP and blasting/surface preparation. Production is executed in-house, enabling custom-engineered work for industrial, construction, transport, and architectural buyers, with an emerging sustainable FRP line using flax and hemp fibres as alternatives to traditional glass fibre.

The business operates a sales-led, project-based commercial model. Customers engage via the company website (brochure download, quick-enquiry form) or direct phone/email contact, with quote-based pricing, free site surveys, and on-site installation. Revenue streams are predominantly one-time, project-driven contracts — bespoke fabrication, lining installation, and standard product lines (anti-slip systems, enclosures, spill containment) — rather than subscription or recurring licensing. The customer base is segmented across five verticals: industrial manufacturing, industrial safety and access, construction and infrastructure, electrical and utilities, and landscaping/architecture, with disclosed case studies spanning UK rail infrastructure, education, fire-safety refurbishment, and automotive transport. The firm holds Achilles, Constructionline, and RISQS pre-qualifications, which are prerequisite credentials for many UK regulated-buyer and rail procurement channels. The 2024 rebrand to SGI Composites repositions the legal entity under a unified identity, and the company reports a 90%+ customer return rate across 28 years of trading.

Name

Sui Generis

Legal name

Sui Generis International Ltd.

Website

https://suigeneris.co.uk

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

SGI Composites (formerly Sui Generis International) is a UK-based manufacturer of bespoke GRP and FRP composite solutions — including storage tanks, industrial linings, anti-slip systems, enclosures, and architectural mouldings — serving industrial, construction, transport, and infrastructure customers from a Colchester manufacturing facility within The Milbank Group.

Ownership category

akta.pro rank

Headquarters

HQ city

Colchester

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Bespoke Composite Fabrication: Custom-engineered GRP and FRP component manufacturing and fabrication services. Project-based revenue from design-through-installation composite solutions for industrial, architectural, and transport applications.
2. Protective Linings & Coatings Services: Installation and application of composite linings for tanks, bunds, walls, floors, and cooling towers, as well as protective industrial coatings.
3. Standard Product Lines: Off-the-shelf GRP products including anti-slip systems, enclosures, housings, furniture and planters, and spill containment products.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sui Generis International Ltd. (trading as SGI Composites) is a UK-based manufacturer that designs, fabricates, and installs bespoke glass reinforced plastic (GRP) and fibre reinforced polymer (FRP) composite solutions. Its portfolio spans custom-engineered components, anti-slip safety access products, protective industrial linings and coatings, enclosures/housings, spill containment, and composite furniture/planters, serving industrial, construction, transport, and architectural customers across the United Kingdom.

Product overview

SGI Composites (formerly Sui Generis International) is a UK-based manufacturer specializing in high-performance composite solutions since 1996. The product portfolio comprises six core product categories: (1) GRP Composite Solutions — bespoke glass reinforced plastic components for industrial, architectural, and automotive applications including storage tanks, covers, and filament wound pipes; (2) Anti-Slip Products — safety access platforms, walkways, trench covers, handrails, ladders, and riser flooring for industrial environments; (3) Industrial Composite Linings — protective tank lining, bund lining, wall and floor linings, and cooling tower lining for chemical containment and corrosion resistance; (4) Protective Industrial Coatings — specialist coatings for demanding industrial environments; (5) GRP Enclosures & Housings — service cabinets, modular enclosures, and modular buildings for equipment protection; and (6) GRP Furniture & Planters — modular seating, tables, planters, and water features for architectural and landscaping applications. Additional offerings include Spill Containment Products and specialized services such as Antibacterial GRP Solutions and Blasting & Surface Preparation. The company operates in-house manufacturing facilities and serves industries including construction, industrial, engineering, transport, and nuclear sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• GRP Composite Solutions
• Anti-Slip Products High-performance GRP anti-slip flooring and access safety systems including safety access platforms, riser flooring, trench covers, walkways, handrails, and ladders for industrial environments requiring slip-resistant and corrosion-resistant access infrastructure.
• Industrial Composite Linings Protective GRP linings for chemical containment, corrosion resistance, and structural durability, including tank lining, bund lining, wall and floor linings, and cooling tower lining for industrial facilities.
• Protective Industrial Coatings Specialist industrial coatings providing corrosion resistance and structural protection for demanding industrial environments, applied as part of composite lining and refurbishment projects.
• GRP Enclosures & Housings High-performance GRP enclosures and housings including service cabinets, modular enclosures, and housings/modular buildings that provide weather-resistant and corrosion-proof protection for electrical, utility, and industrial equipment.
• GRP Furniture & Planters Modular GRP composite seating, tables, planters, and garden water features for public spaces, commercial developments, educational institutions, and landscaping projects.
• Spill Containment Products Spill containment solutions including IBC bunds and related products for secondary containment, environmental protection, and regulatory compliance in industrial settings.
• Antibacterial GRP Solutions Antibacterial treated GRP products and treatments for hygiene-critical environments such as healthcare and food processing facilities, supplied as a specialist service.
• Blasting & Surface Preparation Surface preparation and blasting services carried out to ensure optimal bonding of GRP linings and protective coatings to substrate surfaces prior to installation.

Quantifiable outcome

• 90%+ customer return rate
• +1 more outcomes

Named customers4 records

Segments5 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

One partnership is on record.

• The Milbank GroupcoreStrategic or Co-development PartnerParent company of Sui Generis International Ltd t/a SGI Composites. The Milbank Group is a manufacturing group that includes SGI Composites as part of its portfolio of businesses.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Strongwell: US-based manufacturer of pultruded and moulded GRP structural products, grating, handrails and architectural profiles. Closely comparable product portfolio to SGI, serving industrial and infrastructure customers.
• Bedford Reinforced Plastics: US manufacturer of pultruded fibreglass reinforced polymer (FRP) products including grating, ladders, handrails and structural shapes. Comparable technology (pultruded FRP), similar product mix, and overlapping industrial end-markets.
• Creative Pultrusions: US pultrusion specialist producing FRP structural profiles, grating, and custom composite shapes for industrial, construction and infrastructure applications. Direct manufacturing-method and product-line comparable to SGI.
• Fibergrate Composite Structures: Manufacturer of fibreglass reinforced plastic (FRP) grating, stair treads, handrails and structural products for industrial and commercial applications. Directly comparable product set to SGI's anti-slip and structural access range.
• Selwood: UK-headquartered manufacturer of GRP access platforms, walkways, handrails and ladders for industrial and construction markets. Direct product overlap with SGI's anti-slip/access product line and serves the same UK industrial buyer base.
• Amroc Industrials: UK manufacturer of GRP products including anti-slip flooring, structural profiles, and industrial access systems. Competes head-to-head with SGI in the UK composite access and flooring category.

Emerging players

• Tufcot Composites: UK manufacturer of self-lubricating composite bearings and wear components using fibre-reinforced materials. Adjacent in composite manufacturing know-how but focused on bearings/wear parts rather than the access/linings niche SGI serves.

Broad incumbents

• Scott Bader: Established UK-based global composites manufacturer supplying resins, gelcoats and adhesives plus finished composite components. Larger, broader portfolio than SGI but operates in the same GRP/FRP value chain with overlapping industrial customers.
• Exel Composites: Finland-headquartered global pultrusion and composite profile manufacturer serving construction, transport, and industrial markets. Comparable product technology (filament wound and pultruded composites including pipes and structural profiles) but at significantly larger scale.

Regional players

• National Plastics Services (NPS): UK fabricator of plastic and composite products including tanks, linings, ducting and bespoke fabrications. Direct overlap with SGI's industrial linings and storage tank product lines for the UK industrial containment market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks3 records

Key highlights7 records

Customer concentration

• Xx.com/SuiGenerisLTD

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Sui Generis