One Big Circle

What One Big Circle does

One Big Circle is a Bristol-headquartered rail technology company founded in 2017 that builds AIVR (Automated Intelligent Video Review), a cloud-based, browser-accessible platform for AI-powered remote monitoring of rail infrastructure and rolling stock. The platform ingests multi-modal sensor data — forward-facing video, line-scan imagery at 40,000+ lines per second, thermal infrared, track geometry (gauge, twist, top, alignment, cant deficiency, curvature), RFID, telemetry, and acoustic streams — from lightweight train-borne and lineside capture units, then applies computer vision, anomaly detection, and predictive analytics models trained on 100+ asset and condition classes unique to the rail domain. Coverage extends across more than 95% of the UK mainline rail network, with 240+ deployed systems, 5PB+ of processed data, and 11,000+ active users on the platform.

The company serves three primary customer groups: rail infrastructure managers (e.g., Network Rail), rail operators and train companies (Transport for Wales, Transport for London, East Midlands Railway, Southeastern Railway, LNER, South Western Railway, GWR, MTR), and rail maintenance providers (Loram Maintenance of Way, Colas Rail UK, VolkerRail, Kier, QTS, Mott Macdonald). It also supplies rolling stock leasing companies (Angel Trains, Porterbrook) and major OEMs (Siemens Mobility, Hitachi Rail, Alstom). Revenue is generated through four streams: AIVR platform subscriptions, sale and deployment of AIVR hardware capture units, professional services for integration and deployment, and managed services for customers requiring fully outsourced remote inspection. Pricing is quote-based on an annual billing cycle with no public tiers.

Distribution runs through direct enterprise sales, the UK G-Cloud public-sector procurement framework, and a 2026 strategic minority investment and partnership with Loram Maintenance of Way that opens international expansion. The product suite has expanded from the core AIVR inspection platform into DepotMATE (depot-based rolling stock examination, deployed with Colas Rail, EMR, and TfL), AIVR Lookout (AI-driven station and level-crossing security surveillance), and AIVR OLE monitoring (electrified infrastructure inspection via UV cameras). The company has won multiple Innovate UK First-of-a-Kind grants, the King's Award for Enterprise for Innovation (2024), and four consecutive National Rail Awards (2021–2024).

Name

One Big Circle

Legal name

One Big Circle Ltd

Website

https://onebigcircle.co.uk

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

One Big Circle builds AIVR, a UK rail-focused AI platform that uses train-mounted video, thermal, and track-geometry sensors to automate infrastructure and rolling-stock inspection for Network Rail, Transport for Wales, Transport for London, and other rail operators and maintainers.

Ownership category

akta.pro rank

Product category

Rail Infrastructure Monitoring Software

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Other Measuring and Controlling Device Manufacturing (334519), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Railroad Equipment (3743), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Rail Asset Inspection, Monitoring & Diagnostics (Track Geometry, Wayside Sensors) (TLAJADAG)

akta.pro secondary industries

3D Vision, Depth Sensing & Point Cloud Analytics (HDAAAEAK), Real-Time Vision at the Edge (on-device CV/video) (HDAAAJAE), Video Telematics, ADAS & AI Dashcams (TLAEAFAG)

Keywords

• Rail video monitoring
• Railway asset inspection
• AI video analytics
• Rail infrastructure monitoring
• Predictive rail maintenance

Headquarters

HQ city

Bristol

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Platform Subscriptions: Recurring subscription revenue for access to the AIVR platform, including data processing, analysis, and reporting capabilities. Subscription tiers provide access to different feature sets and data volumes.
2. AIVR Hardware Systems: Sale and deployment of AIVR sensor and capture units that are installed on rail vehicles and infrastructure. Hardware forms the data capture foundation for the platform subscription.
3. Professional Services: System integration, configuration, and deployment services for enterprise customers. Includes installation support, training, and initial platform setup.
4. Managed Services: Ongoing monitoring and data processing services where customers require fully managed remote inspection capabilities rather than self-service platform access.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

One Big Circle develops and sells the AIVR (Automated Intelligent Video Review) platform, a cloud-based AI system that captures forward-facing HD video, thermal imagery, track geometry, and conductor rail data from train-borne sensors and applies computer vision to automatically detect over 100 rail asset and condition types. The company also sells proprietary hardware capture units installed on rail vehicles and infrastructure, and offers DepotMATE, a multi-sensor depot inspection system for rolling stock.

Differentiator

Problem solved

Functional benefit

Brands

• AIVR: Automated Intelligent Video Review - multi-award winning cloud-based rail infrastructure monitoring platform using AI and machine learning for automated inspection and predictive maintenance.
• DepotMATE

Products and services

• AIVR Platform Browser-based, cloud-hosted AI platform that ingests forward-facing HD video, thermal imagery, line-scanning track imagery, and track geometry data from train-borne sensors, then applies computer vision to automatically detect over 100 rail asset and condition types for remote inspection by rail infrastructure managers and operators.
• AIVR Lookout AI-driven security surveillance system for railway station environments that integrates with existing CCTV infrastructure to automatically detect incidents such as abandoned baggage, suspicious behaviour, unusual dwell-time, violence, and complex crowd dynamics, reducing the need for manual CCTV monitoring.
• DepotMATE (Multi-sensor Automated Train Examination) Depot-based rolling stock inspection system that uses lightweight sensors to capture visible, thermographic, and acoustic data from passing trains, then applies Machine Learning for asset detection, RFID identification, and temperature exceedance detection to enable remote depot inspection for train operators.
• AIVR OLE Monitoring AIVR-based monitoring solution for electrified overhead line equipment that combines balance weight detection with UV camera-based corona discharge detection to support climate resilience and proactive maintenance of OLE assets for rail infrastructure operators and rolling stock lessors.
• AIVR Capture Hardware Systems Proprietary sensor and capture units (240+ deployed) installed on rail vehicles and infrastructure to capture forward-facing video, thermal imagery, line-scanning track imagery, and track geometry data that feed the AIVR platform. Hardware forms the data-capture foundation for the AIVR subscription.

Quantifiable outcome

• £50 million in annual savings generated for customers through reduced manual inspection work and improved maintenance efficiency
• +2 more outcomes

Named customers9 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability12 records

Feature6 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• Loram Maintenance of WaycoreStrategic or Co-development Partner · 1 January 2023Strategic partnership and minority investment relationship where Loram, a major rail maintenance equipment provider, partnered with One Big Circle on AIVR technology deployment. Loram provides deployment expertise and market access for the AIVR platform within the rail maintenance sector.
• Network RailcoreTechnology or IntegrationMajor infrastructure customer and data partner. Network Rail utilizes AIVR technology for network-wide remote monitoring and asset inspection across the UK mainline rail network.
• Colas Rail UKcoreTechnology or IntegrationDeployment of DepotMATE intelligent depot management system for Colas Rail UK maintenance facilities, enabling automated depot operations and asset tracking.
• East Midlands RailwaycoreTechnology or IntegrationDeployment of DepotMATE intelligent depot management system for East Midlands Railway depot operations management.
• Transport for LondoncoreTechnology or IntegrationDeployment of DepotMATE intelligent depot management system for Transport for London's rail operations.
• Angel TrainscoreStrategic or Co-development PartnerPartnership on OLE (Overhead Line Equipment) project for Angel Trains, a major rolling stock leasing company. AIVR technology deployed for inspection of electrified infrastructure.
• MTC (Manufacturing Technology Centre)minorStrategic or Co-development PartnerCollaboration on railway security project with the Manufacturing Technology Centre, focused on advanced inspection technologies for rail safety applications.
• Transport for WalescoreTechnology or IntegrationAIVR partnership for data capture and AI-powered inspection services across the Transport for Wales rail network.
• Innovate UKminorOthersGovernment funding source providing grant support for First-of-a-Kind (FOAK) technology development and innovation projects.
• Department for TransportminorOthersGovernment department providing funding support and policy framework for rail technology innovation projects.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• KONUX: KONUX provides AI-driven predictive maintenance and IoT for rail switches and infrastructure, combining trackside sensors with cloud analytics. Directly comparable to One Big Circle in applying AI to rail asset monitoring with a SaaS data platform model.
• Cordel: Cordel delivers AI-powered video and LiDAR analytics for rail infrastructure inspection, including automated asset detection and clearance surveys. A close direct competitor using train-borne cameras and cloud processing for the same rail inspection use cases as AIVR.
• RailVision: RailVision applies computer vision and AI to onboard rail cameras for obstacle detection, level crossing safety, and infrastructure monitoring. Comparable in applying AI video analytics to rail safety and inspection, though with greater focus on obstacle/collision detection than track inspection.
• Sperry Rail: Sperry Rail provides ultrasonic rail flaw detection and is integrated with AIVR for combined visual and ultrasonic inspection. Direct comparable in rail infrastructure inspection services and an existing data integration partner.

Broad incumbents

• Siemens Mobility: Global rail OEM and signalling/digital services provider with Railigent X and other asset-monitoring platforms. Both a current AIVR customer/partner and a broad incumbent whose in-house digital portfolio overlaps with AIVR's value proposition across network monitoring and predictive maintenance.
• Alstom: Global rolling stock and signalling OEM with digital mobility solutions including HealthHub for predictive maintenance. Overlaps with AIVR in fleet monitoring and condition-based maintenance, and is a current AIVR customer/partner.
• Hitachi Rail: Major rail OEM offering digital asset management and predictive maintenance solutions alongside rolling stock. Comparable to One Big Circle as a current customer/partner and as a broader incumbent with overlapping inspection and monitoring capabilities.
• ENSCO Rail: ENSCO provides track geometry, rail flaw detection, and inspection vehicles globally. Comparable as an established rail inspection specialist whose measurement-driven offering sits alongside One Big Circle's video-led inspection platform.
• Holland LP: Holland provides rail inspection technologies including geometry, rail flaw detection, and video systems. Comparable as a multi-modality rail inspection incumbent overlapping with AIVR's integrated sensor approach.
• Bentley Systems (AssetWise): Bentley's AssetWise platform provides infrastructure asset reliability and analytics for rail and transit operators. Comparable as an enterprise infrastructure asset management platform with overlapping value to One Big Circle's condition-monitoring use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 One Big Circle