Modular Building Design & Build

Cairn Cross Modular Building Design & Build – Flexible, Safe & Efficient Solutions

Cairn Cross designs and builds bespoke welfare buildings for UK rail depots and industrial sites, delivering safe, durable, and fully compliant structures for offices, staff facilities, and operational use.

What Are Modular Buildings?

Prefabricated structures built off-site and delivered to the location for rapid assembly, providing flexible spaces for offices, staff facilities, storage, or operational areas.

Cairn Cross provides bespoke modular building solutions that:

Deliver fast, cost-effective construction for rail depots, industrial sites, and commercial facilities
Provide flexible layouts tailored to operational needs
Comply fully with UK building, safety, and accessibility standards
Integrate seamlessly with site infrastructure, utilities, and depot workflows

Our approach ensures modular buildings are robust, efficient, and tailored to each project’s requirements.

Key Features and Benefits

Rapid construction – prefabrication reduces on-site build time
Customisable layouts – tailored to office, staff, storage, or operational needs
Durable, high-quality materials – designed to withstand operational environments
Safe and compliant – meets UK building, accessibility, and safety standards
Flexible deployment – suitable for temporary or permanent installations
Cost-effective solution – reduced on-site disruption and quicker project delivery

Professional Modular Building Solutions

Cairn Cross delivers end-to-end modular building solutions also known as welfare buildings, combining engineering expertise with practical construction experience:

Custom design for depot or industrial requirements
Structural engineering and safety compliance
Off-site fabrication for faster installation
On-site assembly and integration with site utilities and walkways

Compliance with UK building regulations and operational standards

Modular Building Services Offered

Cairn Cross provides a full range of services, including:

Site-specific design and structural engineering
Off-site fabrication of modular units
On-site assembly and installation
Integration with utilities, walkways, and depot infrastructure

These services ensure safe, durable, and fully compliant modular buildings for rail depots, industrial sites, and commercial facilities.

Applications Across UK Projects

Cairn Cross modular buildings are applied to:

Rail depot staff facilities and offices
Maintenance and operational areas
Industrial and commercial office spaces
Temporary or permanent site accommodations
Extended depot or operational facilities requiring rapid construction

Our bespoke modular buildings ensure flexible, safe, and operationally efficient spaces.

Structured Delivery

Cairn Cross delivers welfare building projects through a structured, safety-focused approach:

Site survey and operational assessment
Custom design and structural engineering
Off-site fabrication of modular units
On-site assembly and integration with utilities and infrastructure

This ensures modular buildings are delivered safely, efficiently, and fully compliant with UK standards.

Supporting Flexible and Efficient Operations

Cairn Cross modular buildings provide:

Rapidly deployable, safe, and durable spaces
Integration with depot workflows and operational facilities
Compliance with UK building regulations, accessibility, and safety standards
Flexible layouts for offices, staff rooms, storage, or operational use

Our bespoke solutions support safe, reliable, and efficient depot and site operations.

Why Choose Cairn Cross

Cairn Cross combines engineering expertise, off-site fabrication, and practical construction experience, delivering welfare buildings, tailored to operational and depot requirements.

UK rail depots and industrial sites have trusted Cairn Cross for over 30 years to provide safe, durable, and fully compliant modular buildings, enhancing operational efficiency and staff facilities.

Canton VEMS

Installation of a new Vehicle & Equipment Measurement System (VEMS)

Customer

Transport For Wales

Sector

Rail Infrastructure

Etches Park Walkways & Lighting

Installation of walkways, LED Strip Lighting and safety signage

Customer

Transport For Wales

Sector

Rail Infrastructure

Eastcroft Walkways and Lighting

Design, supply and install upgrade works for EMR at Eastcroft depot

Customer

EMR

Sector

Rail Infrastructure

Canton Bogie Drop

Delivering a State-of-the-Art Bogie Drop Facility for the TfW Core Valley Lines Transformation

Customer

Transport For Wales

Sector

Rail Infrastructure

Allerton TrackPan

TrackPan installation for Buckinghams at Allerton Train Depot

Customer

Buckinghams

Sector

Rail Infrastructure

Kings Heath

Siemens appointed Cairn Cross to construct a multifunctional facility at Kings Heath.

Customer

Siemens Mobility

Sector

Rail Infrastructure

GBRf Peterborough Maintenance Hub DNO

Customer

GB Railfreight

Sector

Rail Infrastructure

Tonbridge Maintenance Facility

Cairn Cross built a new £2.5 million maintenance facility in Tonbridge to support GB Railfreight’s growing locomotive fleet.

Customer

GB Railfreight

Sector

Rail Infrastructure

St. Phillips Marsh Carriage Wash Upgrade

Replacement of a carriage wash and plant room equipment

Customer

Great Western Railway

Sector

Rail Infrastructure

Peterborough Maintenance Hub

A Design and build project to supply a new rail maintenance hub facility with a new building and p-way siding.

Customer

GB Railfreight

Sector

Rail Infrastructure

Kettering Train Hand Wash Facility

New hand washing facilities and TrackPan walkway installation to allow workers safe access to the train.

Customer

EMR

Sector

Rail Infrastructure

Machynlleth Depot Upgrades

A Design & Build project to supply a brand new tandem wheel lathe facility with new building and new p-way siding.

Customer

Transport for Wales

Sector

Rail Infrastructure

Central Rivers Wheel Lathe

A Design & Build project to supply a brand new tandem wheel lathe facility with new building and new p-way siding.

Customer

Bombardier/Alstom Rail

Sector

Rail Infrastructure

Southend Victoria AVIS

AVIS system installation from Cairn Cross along the existing rolling stock carriage wash facility at Southend Victoria Depot.

Customer

Greater Anglia

Sector

Rail Infrastructure

Tim Horton’s Restaurants

Cairn Cross was instructed to undertake all external civil works on a build-only basis for a new restaurant chain.

Customer

Thompsons

Sector

Highway, Bridges & Structures

Hull Botanic Gardens Maintenance Depot Extension

Rail depot infrastructure upgrades and structural modifications to rail shed building.

Customer

Northern Rail

Sector

Rail Infrastructure

King’s Heath AVIS

To install an AVIS system along the existing carriage wash at King’s Heath Depot

Customer

Siemens

Sector

Rail Infrastructure

Greenholme Mills

Groundworks to renovate a textile mill into luxury apartments.

Customer

MMR

Sector

Highway, Bridges & Structures

St Nicholas Church Retaining Wall Restoration

Cairn Cross has completed works repairing a retaining wall on the boundary of St Nicholas Church, Bradfield.

Customer

St Nicholas Church

Sector

Highway, Bridges & Structures

Oxley Depot Subsidence

Due to subsidence issues, Cairn Cross replaced 137m length of the Road 16 rail pit walls and associated works.

Customer

Alstom

Sector

Rail Infrastructure

Glasgow AVIS & Carriage Wash

Design and build project to replace an AVIS and carriage was facility at SPT depot.

Customer

Wilcomatic

Sector

Rail Infrastructure

Neville Hill Wheel Lathe

Project to deliver the civils and foundations for the installation of the Network Rail owned Wheel Lathe.

Customer

RMTS

Sector

Rail Infrastructure

A511 Junction & Level Crossing Works

This project formed part of the Bardon Hill Quarry Extension Project – Phase 1. The requirement was for upgrade works to the A511 highway and upgrade of the existing Level Crossing.

Customer

Aggregate Industries

Sector

Highway, Bridges & Structures

Tingley Mills Phase 1 Infrastructure Works

As part of the Tingley Mills Residential Phase One redevelopment, Cairn Cross supplied various groundworks, drainage, storm attenuation and S278 surfacing works.

Customer

MMR

Sector

Highway, Bridges & Structures

Hayle Bridge Strengthening Works

Strengthening works to the bridge spanning the Copperhouse Pool tidal reservoir

Customer

Home Bargains

Sector

Highway, Bridges & Structures

CET Upgrade & Installation at Stockport

Design and build project to upgrade the Stockport Sidings CET system to enable CET operations on the new rolling stock fleet.

Customer

Northern Rail

Sector

Rail Infrastructure

Sheffield LMD Works

Project to increase the servicing capacity at Sheffield Depot. The provision of Canopies, services, lighting and TrackPan containment at each end of the shed increased fueling provisions, AdBlue, CET point, expanded oil distribution facility.

Customer

Northern Rail

Sector

Rail Infrastructure

Wednesbury Access Platforms

Cairn Cross built Steel Structure and gantry walkways to access the top of the trains in the depot.

Customer

Transport for West Midlands

Sector

Rail Infrastructure

Oxford Beech House Basement Works

The project required the excavation and installation of a new waterproof reinforced concrete basement to support a five-story student accommodation building.

Customer

Winvic Construction Ltd

Sector

Highway, Bridges & Structures

Trafford Wheel Lathe

A Design & Build project to install a new Wheel Lathe, swarf conveyor and associated works.

Customer

Transport for Greater Manchester

Sector

Rail Infrastructure

Toton Wheel Lathe

DB Schenker required a new U2000-400 underfloor wheel lathe at Toton to replace the current ageing Lathe. Cairn Cross removed the old Lathe and altered the existing pit to accept the new Lathe.

Customer

DB Cargo UK

Sector

Rail Infrastructure

Elland Road Bridge Replacement

Cairn Cross worked as a Specialist Subcontractor to help deliver a replacement of a two-track bridge in Leeds, Yorkshire.

Customer

May Gurney

Sector

Highway, Bridges & Structures

Wimbledon Wheel Lathe

Cairn Cross Civil Engineering Limited completed a replacement of a rail depot pit drop and train wheel lathe.

Customer

South West Trains

Sector

Rail Infrastructure

New RRV Maintenance Shed at Crewe

Design and build scheme to provide a new shed facility to accommodate Road Rail Vehicles (RRV) on the depot.

Customer

Network Rail

Sector

Rail Infrastructure

Train Wash Systems in Perth

Train Wash Systems Facility was constructed along with associated electrical and waterworks in Perth, Scotland.

Customer

Network Rail

Sector

Rail Infrastructure

Carriage Wash Installation at Holyhead

A Design and Build contract to deliver a new carriage wash shed and facilities to wash trains on the sidings at night so that vehicles are cleaned and maintained before leaving the depot in the morning.

Customer

Network Rail

Sector

Rail Infrastructure

Old Flatts Bridge Strengthening Works

Due to the shortening of the span between the abutment faces, the client required rehabilitation to restrengthen the bridge.

Customer

Eurovia Contracting

Sector

Highway, Bridges & Structures

Longsight Front Entrance and Car Park

A new security building and car park facility were required at the entrance to the existing maintenance depot.

Customer

Alstom

Sector

Highway, Bridges & Structures

Stoke-on-Trent Wheel Lathe

Depot upgrades, including a new rail Wheel Lathe, foundations and external concrete access roads civil engineering works.

Customer

DB Cargo UK

Sector

Rail Infrastructure

Gosforth Train Wash

A Design & Build project to replace an existing train wash with a new facility, including a water recovery system.

Customer

Nexus

Sector

Rail Infrastructure

Longsight Wheel Lathe Installation

Replacement wheel lathe and maintenance pit reconstruction.

Customer

Alstom

Sector

Rail Infrastructure

Portobello Carriage Wash Installation

Installation of CET modules and train carriage wash facility for East Coast Mainline in Portobello, Edinburgh

Customer

East Coast Mainline

Sector

Rail Infrastructure

Wembley Wheel Lathe Replacement

A design and build project with Cairn Cross as the main contractor replacing a wheel lathe and reconstructing a maintenance pit.

Customer

Alstom

Sector

Rail Infrastructure

Craigentinny Underfloor Wheel Lathe Installation

Turnkey design and build contract to replace a single-headed wheel lathe with a new single headed Hegenscheidt CNC wheel lathe requiring actuations to the existing structure.

Customer

Network Rail

Sector

Rail Infrastructure

Thornhill Bridge Strengthening Works

This project was to supply grit blast painting and a new concrete bridge deck to comply with highway loadings.

Customer

Network Rail

Sector

Highway, Bridges & Structures

Oxley Train Depot Extension

Provision of a new shed facility to accommodate the new 11 car fleet of trains.

Customer

Alstom Traincare

Sector

Rail Infrastructure

Queens Road New Maintenance Depot

Design and build contract for the provision of a maintenance workshop and associated works.

Customer

Stagecoach Metrolink

Sector

Rail Infrastructure

Controlled Sewer Overflow (CSO) Installation at Darnall

Construction and associated works of multiple Combined Sewer Overflow (CSO) units for Yorkshire Water.

Customer

Peter Duffy & Yorkshire Water

Sector

Water

Todwick Road Bridge Deck Replacement

Working as a specialist subcontractor, Cairn Cross helped deliver the deck replacement on behalf of Ringway.

Customer

Ringway

Sector

Highway, Bridges & Structures