IT support & cyber security for West Sussex businesses
Fixed monthly managed IT support from our office in Arundel, for businesses across West Sussex. Monitoring, patching and security included, with a named engineer who knows your setup.
- Cyber Essentials certified
- 24/7 proactive monitoring
Trusted by businesses including
Rated 5.0 on Google by Sussex businesses.
We have been with ATS Connection for years and they have always been reliable. Fast, efficient, and they really know their stuff.
Their proactive IT support has saved us a lot of headaches. We can focus on growing our business knowing our IT is sorted.
ATS Connection has been a huge help. Whenever we run into IT issues, they are always there to resolve things quickly.
Repaircraft: modern IT across two sites, and Cyber Essentials Plus.
Repaircraft was running on an old PSTN phone line and unmanaged infrastructure, and its previous IT support was slow to respond. We moved both sites to cloud systems and hosted VoIP, installed full fibre broadband, added backup and disaster recovery, refreshed ageing hardware and took over managed IT and cyber security. Then we guided the team through Cyber Essentials Plus.
“Moving to ATS completely changed how we think about our IT.”
Adrian StaintonRepaircraft PLC
Read the Repaircraft case studyA complete managed IT and security stack, from one West Sussex partner.
Everything you need to run modern, secure IT, proactively managed by a UK team that picks up the phone.
Business IT Support
Unlimited UK helpdesk, 24/7 monitoring and proactive maintenance for your entire IT estate.
Learn more about business IT supportCyber Security
Cyber Essentials certified protection across endpoint, identity, email, firewall and staff awareness training.
Learn more about cyber securityMicrosoft 365
Microsoft Partner-led deployment of Teams, SharePoint, Exchange and Entra ID, secured properly.
Learn more about Microsoft 365VoIP & Telecoms
Modern cloud telephony fully integrated with Microsoft Teams, with broadband and mobile options.
Learn more about VoIP and telecomsBackup & Recovery
Immutable backups and tested recovery plans to keep your business running through any incident.
Learn more about backup and recoveryCloud Services
Cloud infrastructure, secure remote working and lifecycle planning for modern regulated teams.
Learn more about cloud servicesCyber security is not a single product. It is six layers, working together.
Most breaches happen where one layer is missing. We design, deploy and maintain all six, then prove they work every quarter.
Security Operations · Arundel
- L1
People
Security awareness training, phishing simulations and a culture that asks before it clicks.
- L2
Identity
MFA everywhere, Conditional Access and privileged-account hardening across Microsoft 365.
- L3
Endpoint
EDR / MDR on every device, automated patching and 24/7 behavioural threat hunting.
- L4
Email & Web
Inbound filtering, link rewriting, attachment sandboxing and DNS-layer protection.
- L5
Network
Segmented firewalls, secure remote access and continuous traffic inspection.
- L6
Recovery
Immutable backups, tested recovery plans and documentation that stands up under pressure.
We do not sell tools. We run them every hour of every day on behalf of the businesses we look after.
Explore cyber securityHow ATS proactively manages your IT.
A defined onboarding and management process designed to remove risk, eliminate downtime and give you a long-term IT partner, not just a number to call.
Discover & Audit
Free IT & Cyber Risk Review. We map your environment, expose risks and quantify what reactive IT is costing you.
Onboard & Harden
Seamless takeover with modern tooling, MFA, patch baselines and clear documentation.
Monitor & Protect
24/7 monitoring across endpoints, identity, network and Microsoft 365, backed by a UK helpdesk.
Improve & Plan
Quarterly reviews with roadmap, budgets, security posture and practical improvements.
Stop firefighting. Start operating securely.
Most growing businesses outgrow break-fix IT long before they switch. The cost shows up as downtime, security incidents and frustrated staff, not on the invoice.
Reactive, break-fix IT
Recurring downtime
Issues resurface because nothing is being managed proactively.
Growing security risk
Outdated tooling, missing MFA, untrained staff and no visibility.
Slow ad-hoc support
Tickets sit in a queue and no one owns your environment.
No long-term roadmap
IT is patched together rather than planned and budgeted.
Managed by ATS
Proactive Support
We monitor, patch, harden and improve continuously to prevent issues before they impact your team.
24/7 monitoring · Quarterly reviews · Predictable monthly fee
Security-Focused
Layered defences across endpoint, identity, email, network and end-user awareness.
MFA & Conditional Access · EDR / MDR · Awareness training
Long-Term Partnership
Most clients stay with us for years because we plan, budget and grow alongside the business.
Dedicated account manager · Strategic roadmap · Senior UK engineers
A premium managed IT partner, not just a support number.
Supporting growing Sussex businesses since 2015, with senior UK engineers, modern tooling and a genuine long-term partnership.
“We do not outsource. Every call is answered in Sussex by an engineer who already knows your network, your team and your business, because they built it with you.”
Jake BoaseDirector, ATS ConnectionThe people who look after your IT.
No call centre and no outsourcing. When you call, you speak to one of us.
Jake BoaseDirector 
Matthew JonesSoftware Developer & Infrastructure 
Tobias GillottIT Engineer 
Jamie WoodIT Engineer 
Alex LeonardIT Engineer 
Sarah AttworthIT Engineer
Built for regulated and professional businesses across Sussex.
From compliance-driven solicitors and accountants to fast-moving recruitment and construction teams.
Local IT support across Sussex and Hampshire.
From Gosport and Portsmouth to Brighton, and north to Horsham and Crawley, run from our offices in Arundel and Chichester. Pick your town for local details.
Clear prices, published up front.
Two packages, billed per user, per month. Support is not metered, so nobody has to think twice before asking for help.
Core support
£30 to £48per user, per month, plus VAT
Reliable day-to-day IT without surprise bills.
- Unlimited helpdesk support
- 24/7 proactive monitoring
- Patching and endpoint protection
- Named engineers who know your setup
Complete IT and security
£55 to £90per user, per month, plus VAT
For businesses with compliance needs or sensitive client data.
- Everything in Core support
- Managed cyber security
- Microsoft 365 management
- Backup and disaster recovery
Rolling annual agreement. Licences and hardware are billed separately at cost. See exactly what is included and work out a price for your team, or read how our outsourced IT support works.
Book a free IT & cyber risk review
A strategic 30-minute review with one of our senior engineers, designed to expose what reactive IT is really costing your business and exactly where to improve.
- Identify hidden cyber security risks across your environment
- Quantify downtime and inefficiencies costing your business
- Audit Microsoft 365, backups, MFA and endpoint protection
- Receive proactive recommendations from a senior UK engineer
Not ready for a call? Take the free twelve-minute IT Security Review first and bring the report with you.
5.0 Google rating
Tell us about your setup
We will arrange a time that suits. No obligation, and no hard sell.
Book your free IT and cyber risk review
Tell us a little about your setup and we will arrange a time that suits. No obligation, and no hard sell.
Tell us what you need. It takes a minute.
A named engineer reviews it, not a call queue.
We reply within one working day with honest next steps.
Thanks, your message has been received.
Good questions to ask any IT provider.
Straight answers to what businesses ask us before they switch. Anything else, call 01903 255 159.
How much does IT support cost for a small business?
Managed IT support is billed per user, per month. Core support is £30 to £48 and Complete IT and security is £55 to £90, plus VAT. Licences and hardware are billed separately at cost. See our pricing for everything that is included.
What is included in managed IT support?
Every package includes unlimited helpdesk support, 24/7 proactive monitoring, patching and endpoint protection, and named engineers who know your setup. Complete IT and security adds managed cyber security, Microsoft 365 management, and backup and disaster recovery.
What are your support hours?
Our helpdesk is open 9am to 5.30pm on working days, with urgent out-of-hours support when you need it. Monitoring runs 24/7.
How quickly do you respond?
Our typical response time is under 15 minutes. You speak to our own engineers, not a call centre.
Do you come on site?
Most problems are fixed remotely, because that is the quickest way. When a job needs hands-on attention, an engineer comes to you from our offices in Arundel or Chichester. Whether visits are included depends on how close you are and which package you are on, and we set that out in your quote.
Is there a contract?
Managed IT support is on a rolling annual agreement. The price is agreed in your quote before anything starts.
How does switching IT provider work?
We audit your setup, take over from your current provider, stabilise everything, then run it day to day. It is planned so that no data is lost and your team can keep working throughout. Read how outsourced IT support works.
Which areas do you cover?
We are based in Arundel and Chichester and support businesses across West Sussex, East Sussex and Hampshire, including Worthing, Bognor Regis, Littlehampton, Horsham, Crawley, Brighton, Portsmouth and Havant. See every area we cover.
Are you Cyber Essentials certified?
Yes. ATS Connection is Cyber Essentials certified, and we help clients get certified too, including Cyber Essentials Plus. Find out about Cyber Essentials.