Top System Admin services companies & Best System Admin Developers in UK

Achieve Operational Excellence with Skilled Admins! Managing system infrastructure demands expert handling. Partnering with top System Admin services companies in UK guarantees reliable performance and security. SelectedFirms features the Best System Admin Providers in the UK. Discover trusted support today.
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2 Companies | Last updated: Aug 08, 2025

List of Top System Admin services companies in UK | Best System Admin Developers

SDLC Corp

SDLC Corp

Your Technology Partner

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SDLC CORP – Global Software Development & Digital Innovation Partner SDLC CORP is a globally recognized software development company delivering robust, secure, and future-ready digital solutions to modern business challenges. Headquartered in the USA, with strategic presence across the UK, Australia, UAE, India, and Singapore, we empower organizations—from startups to Fortune-level enterprises—to accelerate digital transformation, enhance operational efficiency, and unlock new revenue streams through technology. Established in 2015, SDLC CORP has built a reputation for engineering excellence, reliability, and results-driven development. We specialize in full-cycle product development—from ideation and architecture to design, engineering, deployment, and post-launch support. Our solutions are designed to scale, adapt, and perform in today’s fast-paced, competitive digital landscape. Our Core Offerings Include: Web Development Mobile App Development AI & Machine Learning Solutions Digital Transformation Game Development iGaming Solutions - Poker - Casino - Rummy - AAA Games ERP & CRM Development Odoo Development Blockchain Development At SDLC CORP, we deliver digital experiences that are intuitive, high-performing, and aligned with our clients' long-term goals. Our multidisciplinary teams bring together the best of strategy, design, and engineering to craft solutions that create measurable business impact.

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13% IT Services
17% System Administration
Inside Service Listing

$25-$49/hr

Inside Service Listing

$250 - $50,000

Inside Service Listing

1 - 250

Inside Service Listing

UK

Stripe OLT

Stripe OLT

IT Support and Cyber Security Services

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Stripe OLT is a UK-based IT and cybersecurity provider with over 20 years of experience supporting organisations from our offices in Bristol, London, and Manchester. We provide strategic consultancy, IT support and helpdesk services, and fully cybersecurity solutions - helping UK businesses protect their critical systems and data, improve efficiency, and reduce costs. Our clients span sectors including finance, legal, healthcare, logistics, energy, the public sector, and professional services.   As a Microsoft Solutions Partner, with both designations in Modern Work and Security, and a specialisation in Threat Protection, we combine deep technical expertise with a proactive approach. Our certified team supports organisations with Microsoft 365, Azure, cyber resilience, compliance, digital transformation, and ongoing infrastructure management.   With an award-winning 24/7 Security Operations Centre (SOC) and responsive IT Helpdesk, Stripe OLT provides the robust protection and support modern organisations depend on. Most recently, we were named SME Security Solution of the Year at the 2025 Computing Security Excellence Awards.     IT Services Fully Managed IT Support Remote and Onsite Support Proactive Monitoring and Maintenance IT Asset Management Vendor Management Strategic IT Planning and road mapping IT Audits & Risk Assessments Infrastructure and Network Design & Optimisation Digital Transformation Projects Business Continuity & Disaster Recovery CTO Consulting Device as a Service Network Operations Centre Cloud Services Cloud Readiness Assessments Cloud Migrations (Microsoft 365, Azure) Hybrid and Full Cloud Solutions Backup & Disaster Recovery   Cybersecurity Services Managed Cybersecurity Security Operations Centre (SOC) Identity & Access Management (IAM) Incident Response Vulnerability Assessments Threat Detection & Response (MXDR/XDR/MDR) Endpoint Detection and Response Email & Cloud Security Cybersecurity Gap Analysis Cybersecurity Compliance Support Penetration Testing (Network, Web App, Cloud, Mobile) Red Teaming Assessments Breach and Attack Simulation Social Engineering and Phishing Simulation Attack Surface Review Cyber security awareness and education Cyber security Consulting   Microsoft Solutions Microsoft 365 Consulting M365 Licensing and Optimisation Modern Endpoint Management Azure Infrastructure and Migration Services Microsoft Intune & Entra ID SharePoint implementation and adoption Teams implementation and adoption Microsoft Defender XDR Sentinel implementation, management and adoption Microsoft Purview consulting Microsoft Modern Workplace Implementation   Compliance & Governance ISO 27001 consultancy Cyber Essentials & Cyber Essentials Plus Data loss prevention

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65% IT Services
10% System Administration
Inside Service Listing

N/A

Inside Service Listing

$1,000+

Inside Service Listing

51 - 200

Inside Service Listing

UK

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