IT support for London businesses

A single named account director, a 24/7 UK-based service desk, and a registered office on City Road. We support mid-market businesses across London and the South East.

Founded 2010, grown from £10m to £31m  •  2,500+ UK businesses served  •  ISO 27001, ISO 9001 & Cyber Essentials Plus certified

 

IT support built around London's mid-market

London is home to a lot of mid-market businesses who've outgrown the local one-person IT contractor but don't want to disappear into an enterprise supplier's account list. That's why we built Highgate: for organisations with 100 to 2,000 people, usually £10m to £250m in revenue, who need control over risk, predictable costs, and a partner who answers the phone.

We're not the biggest name in London IT. We're a national managed service provider with a registered London office, a genuinely remote delivery model, and one account director who owns your relationship.

Our London registered office

Address: 124 City Road, London, EC1V 2NX

Phone: 0300 140 0000

Email: enquiries@highgate-it.co.uk

Team: all-remote delivery, 24/7 UK-based service desk

Coverage: Central London, Greater London and the wider South East

Sectors we know well in central London

Three sectors are consistently well represented among our London clients. Each has its own compliance pressures and its own reasons for switching IT partner.

Financial services

Chartered accountancies, financial planning practices and wealth managers, many in and around the City. FCA alignment and audit-readiness come as standard, not an add-on.

See our Financial services page →

Legal & professional services

Law firms and professional practices where client confidentiality and uptime aren't negotiable, and a security incident is a reputational event, not just a technical one.

See our Legal & professional services page →

Education

Schools, trusts and training providers across London balancing tight budgets against safeguarding and data protection obligations.

See our Education page →

One trusted partner. Three business outcomes. Six service pillars.

Every engagement sits under one of three outcomes. Most clients start with cybersecurity or managed services, then expand.

Cybersecurity

Gap analysis, Cyber Essentials Plus, SOC-as-a-Service, phishing simulation and incident response.

Learn more →

Business resilience

Disaster recovery, backup-as-a-service, and business continuity planning that gets tested, not just written down.

Learn more →

Cloud & infrastructure

Cloud migration, IaaS, cost optimisation and infrastructure health checks.

Learn more →

Managed services

24/7 service desk, platform monitoring, and proactive maintenance under one account director.

Learn more →

Connectivity

SD-WAN, wireless networking, and UCaaS for teams working across multiple London sites.

Learn more →

Workplace technology

Device-as-a-service, Microsoft 365, Copilot rollout and JML services for growing headcounts.

Learn more →

Sourcing hardware or software?

Highgate has supplied IT hardware and software since 2010, vendor-agnostic and account-managed by the same team that runs your IT. Buy alongside a managed service, or on its own.

How a top 50 accountancy firm consolidated its IT across four offices

– Microsoft Modern Management rolled out across all four offices

– Single account director replacing a fragmented, office-by-office support model

– Predictable IT spend in place of ad hoc invoicing

Client: Mercer & Hole

Sector: Financial services

Size: 300 employees

Location: London, St Albans, Rickmansworth, Milton Keynes

Client since: 2023

'What sets Highgate apart is the relationship. We're a complex business with demanding requirements across four offices, and they treat us accordingly, responsive, fairly priced, and genuinely invested in getting it right. A vendor you can truly rely on.'

Tom Luknar
IT Manager at Mercer & Hole

'We have been a customer of Highgate's for several years now. The Highgate team are friendly and very helpful, they go above and beyond. We can rely on them if we need technical advice on products and solutions.'

IT department
London Borough of Hounslow

Questions London businesses ask us

Do you have a London office?

Our registered office is at 124 City Road, EC1V. It’s a virtual registered address, not a staffed site, in keeping with our all-remote delivery model. What you get instead is a named account director for your relationship and a 24/7 UK-based service desk, so support isn’t limited by who’s in a building on a given day.

Central London, the City, and boroughs across Greater London, plus the wider South East. Most of our current London clients sit in financial services, legal and professional services, or education.

Mid-market: usually 100 to 2,000 employees and £10m to £250m in revenue. We’re not set up for micro-businesses wanting occasional support, and we’re not an enterprise supplier either.

 

Yes. Mercer & Hole is a good example: one London office among four, all supported under a single account and a single point of contact.

Talk to the team that covers your London requirements

Book a 30-minute IT review. No obligation, no sales pitch, just a straight look at where you stand.