IT Companies in Hertfordshire

SEG CORE LTD

St Albans

SEG Core Ltd is a UK-based technology services provider specialising in delivering integrated IT, networking, and infrastructure solutions for the social housing and SME sectors. As part of the Specia

TekOne Technologies Ltd.

Stevenage

IT Support in Stevenage, Hitchin Hertfordshire. Reliable, fast and affordable IT Support services with over 20 years experience. Call us on 01438 771 000

e-Manage

Watford

DLV Solutions

Stevenage

Looking for reliable IT services in Stevenage? Discover how our expert team can optimize your business operations for enhanced productivity .

NE-ONE By Calnex

Stevenage

iTrinegy’s Network Emulator Products enable you to create Software Defined Test Networks to manage the risk of networked applications in LANs, WANs, Wireless/Radio, Mobile, Satellite and Cloud networks.

ICTM SERVICES

Stevenage

Aceguard RM LTD

Hemel Hempstead

Aceguard RM provides cyber security services to businesses across Hertfordshire from its Hemel Hempstead base. It serves sector clients including estate agents, healthcare providers, schools, solicitors and charities, alongside SMEs generally. Offerings cover penetration testing, vulnerability assessments, Cyber Essentials certification support, managed security monitoring, Microsoft 365 security configuration, incident response, ransomware recovery and outsourced IT support, with emergency assistance available on request.

Acrelec (UK)

Hemel Hempstead

Acrelec supplies digital technology for the food service and retail sectors, including digital signage displays, indoor and outdoor ordering kiosks, self-checkout modules, and operational tools such as QTimer, OrderMatic and table service systems. Based in Hemel Hempstead, the company serves quick service restaurants, drive-thrus and retail leisure environments, with facial authentication and computer vision analytics among its offerings.

Adooa Ltd

St Albans

Adooa is a boutique telecoms consultancy based in St Albans helping businesses improve customer experience across voice, video and messaging channels. It supplies business VoIP and unified communications linking desktops, mobiles and internal phone systems, integrates telephony with CRMs including HubSpot, and provides speech analytics, conversational AI, secure payment handling and WhatsApp/SMS messaging. Solutions are tailored to each client's business goals, tech stack and compliance requirements.

AGITech IT Solutions

Watford

AGITech UK is an IT services company based in Watford, working with businesses that need extra resource or advice on projects. Its multi-national team includes developers, UI designers, business and product analysts, project managers and architects, delivering IT solutions, consulting and project support. The company positions itself around problem solving, offering hands-on help to grow businesses or complete difficult projects.

Appdrawn Software Development

Watford

Appdrawn is a Watford-based bespoke software development company building tailor-made solutions for specific business requirements. Its in-house designers and consultants deliver projects from start to finish, including legacy software modernisation to upgrade and automate existing systems, mobile app development published to the app store, and SQL-based database development with UX-led design and GDPR compliance. Clients include Oxford International Education Group.

Armari

Watford

Armari designs and builds custom workstations, servers, storage and gaming PCs, including its Magnetar range for 3D animation, video editing and scientific research. The company has over 28 years of experience and has produced Linux clusters that have featured in the Top500 list of the world's fastest computers. Its Magnetar M64T7 workstation won PC Pro's Workstation of the Year in 2024 and the high-end category of PC Pro's creative workstation group test. Armari also offers Ripper Rentals, a cloud workstation rental service, alongside onsite network support and OEM appliance design and integration with global certification.

Avente

Watford

Avente designs, supplies, installs and maintains networking solutions for businesses, covering voice and data across LANs and WANs. Its portfolio includes switching, routing and security platforms, integrated IP and VoIP services, and copper and fibre cabling. Based in Watford, the company also provides consultancy, integration and maintenance cover plans with on-site technical support to keep client networks secure, accessible and simple to manage.

Axia Computer Systems

Watford

Axia Computer Systems Ltd is a Watford-based Managed Service Provider delivering IT support, cloud, networking and cyber security for small and medium-sized businesses across Hertfordshire, Bedfordshire, Buckinghamshire and London. Established in 1994, it offers managed helpdesk, infrastructure, cloud services and sector-specific solutions for professional services, accountancy, charities, construction, healthcare, education, manufacturing, insurance, financial services and technology partners.

Axia Computer Systems Ltd

Watford

Axia Computer Systems Ltd is a Watford-based managed service provider established in 1994, delivering IT support, cloud services, networking and cyber security to small and medium-sized businesses across Hertfordshire, Bedfordshire, Buckinghamshire and London. Services include managed helpdesk support, Microsoft 365 and Azure cloud, network assessments, bespoke mobile app development, disaster recovery and VoIP. It serves sectors including professional services, accountancy, healthcare, education, construction and manufacturing.

Beebug Ltd

St Albans

Beebug Ltd is a St Albans-based ICT provider serving primary schools and the education sector since 1982. Services include IT consultancy and on-site support, a remote helpdesk, proactive network monitoring, structured cabling and network installation, cloud services across Microsoft 365, Google Workspace and AWS, cyber security, IP telephony and internet connectivity, plus AV, interactive, access control and CCTV solutions.

BETA CAE Systems UK Ltd.

St Albans

BETA CAE Systems UK Ltd, based in St Albans, supplies simulation software for engineering analysis and product development. Its suite includes ANSA pre-processing, EPILYSIS solver, FATIQ fatigue analysis, META post-processing, RETOMO CT-data modelling and SPDRM simulation data management. Tools cover meshing, crash and safety, NVH, CFD, thermal and multibody analysis across industries such as automotive, aerospace, defence and energy. The company also provides training, consulting and technical support.

Blizzard Group

Hemel Hempstead

Blizzard Group is an employee-owned telecommunications distributor based in Hemel Hempstead. It supplies voice, connectivity, messaging, mobile, Microsoft Teams and utilities services to over 300 resellers through a white-label partner programme. Partners sell under their own brand while Blizzard manages billing, provisioning, order processing, customer service and technical support on an open-book basis, with no setup costs or fixed overheads.

BTLITC

Watford

Watford-based IT provider serving UK organisations with cybersecurity, AI, cloud and managed IT. Cybersecurity covers AI-driven threat detection, SIEM/SOC, penetration testing and compliance frameworks. Its AI Vault product runs large language models on-premise so no data leaves the client environment. Managed services include 24/7 support and infrastructure management; cloud work spans Azure and AWS migration plus DevOps automation. Operations run across the UK and India.

Cabledan

Watford

Cabledan is a family-run telecommunications contractor based in Watford with over 20 years' experience in structured cabling. It designs and installs data cabling infrastructure for businesses and homes across Hertfordshire, London and the Home Counties. Services include fibre optic installation and repair, data cabinet installation and tidying, cable testing, comms room access control, business and home Wi-Fi, IP CCTV, floor box installation and office IT moves.

CBH Computers Ltd

Hemel Hempstead

CBH Computers provides managed IT support to businesses in the London area, with 24/7 helpdesk cover, continuous monitoring, patching and regular on-site check-ups. The company migrates servers, apps and data to Microsoft 365 or Azure, delivers cyber security including round-the-clock threat monitoring against ransomware and phishing, reports against recognised security frameworks, and supplies connectivity and unified communications for UK SMEs seeking less downtime and easier compliance.

CertOn.co.uk

Hemel Hempstead

CertOn provides a cloud-based portal for storing and accessing property-related documents. Certificates, reports and manuals covering gas, electrical, fire safety, asbestos, legionella and other compliance areas are uploaded and linked to QR code stickers placed in the property. Scanning the sticker with a smart device retrieves documents 24/7. The service is aimed at homeowners, tenants, landlords, contractors, developers, housing associations and letting agents.

ClearLake IT Ltd

Hemel Hempstead

ClearLake IT provides IT architecture, implementation and support services to businesses, schools and government clients across Oxfordshire and the UK. Its services cover cloud solutions including IaaS and storage, managed IT services with shared or dedicated hosting, disaster recovery, hardware and software licensing procurement, network solutions and IT support consulting. Support is available on an ad-hoc or ongoing basis, with remote support offered for businesses and schools.

Clearpath Telecom ltd

Stevenage

Clearpath Telecom supplies VoIP phone systems to businesses, offering hosted VoIP, cloud-based PBX and onsite engineering alongside voice, data and internet solutions. Drawing on over 20 years of telecoms experience, the company provides expert advice, clear pricing and personalised support tailored to each client's business requirements.