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 | Ranking updated: Aug 29, 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 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 Cyber Security & IT Provider with over 20 years of experience delivering IT support, consultancy, and managed security services. From our offices in Bristol, London, and Manchester, we provide expert-led solutions that modern organisations depend on. As a Microsoft Solutions Partner in Modern Work and Security, with a specialisation in Threat Protection, our certified team helps organisations safeguard data, modernise infrastructure, and scale securely. We work across specialist sectors including finance, legal, healthcare, logistics, energy, the public sector, and critical UK infrastructure. Supported by our award-winning 24/7 Security Operations Centre (SOC) and IT Helpdesk, we’ve delivered projects and services for leading organisations such as MoneySuperMarket Group, Hargreaves Lansdown, the NHS Confederation, and National Rail. Recognised as a Top 32 Scale-Up by Business Leader, a Megabyte Top 50 Rising Star, and winner of SME Security Solution of the Year at the 2025 Computing Security Excellence Awards, Stripe OLT continues to set the standard for enterprise-grade IT and security - all without the enterprise price tag. Cyber Security Services Threat Management Services Managed Cyber Security Security Operations Centre (SOC) Threat Detection & Response (EDR/ MDR/ XDR / MXDR) Incident Response Services Proactive Security Services Attack Surface Review Vulnerability Assessments Cyber Security Gap Analysis Social Engineering and Phishing Simulation Cyber Security Awareness & Education Offensive Security Services Penetration Testing Network, Web App, Cloud, Mobile Red Teaming Assessments Breach and Attack Simulation IT Services Managed IT: Fully Managed IT Support Remote & On-site Support Network Operations Centre Services Proactive Monitoring and Maintenance IT Asset Management Vendor Management Strategic IT Planning / IT Road Mapping Device-as-a-Service (DaaS) IT Consultancy: CTO Consulting Cloud Services Cloud Readiness Assessments Cloud Migrations (Microsoft 365, Azure) Hybrid and Full Cloud Solutions Infrastructure and Network Design & Optimisation Digital Transformation Services Business Continuity, Back Up & Disaster Recovery Services Compliance & Governance Services: ISO 27001 Consultancy Cyber Essentials & Cyber Essentials Plus Microsoft Services Microsoft Modern Workplace Solutions Microsoft 365 Consulting Microsoft 365 Licensing Optimisation Microsoft Teams Implementation & Adoption Solutions Azure Infrastructure & Migration Services SharePoint Implementation & Adoption Services Teams Implementation & Adoption Microsoft Security Solutions Identity & Access Management Services (IAM) Modern Endpoint Management Microsoft Intune & Entra ID Consultancy Microsoft Purview Consulting Managed Microsoft MXDR Solutions Microsoft Sentinel Implementation, Adoption & Management Services Microsoft Defender XDR Solutions Want to know more about how we can help your organisation transform with secure, cloud-first technology? Get in touch with one of our experts today: www.stripeolt.com | hello@stripeolt.com | 0207 043 7044

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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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