You have finally moved into your new office. The desks are arranged, the chairs are in place, and the kettle is working. But before you declare the move a success, there is a critical checklist that too many UK businesses overlook: systematically testing every element of your IT infrastructure to ensure it is functioning correctly in the new environment.
An office move involves far more than physically relocating hardware. Network configurations change, internet circuits are provisioned on new lines, phone systems may need reconfiguring, and subtle differences in the new building's electrical and cabling infrastructure can cause unexpected problems. Without thorough post-move testing, issues that could have been caught and resolved on day one may instead surface during a critical client call, a major deadline, or — worst of all — a security incident.
This comprehensive guide provides a structured testing framework that covers every aspect of your IT systems, from basic connectivity through to security validation and disaster recovery verification.
Phase One: Network Connectivity and Internet Access
The foundation of every modern office IT system is the network. If your network is not functioning correctly, nothing else will work properly. Start your testing here and do not move on until every element is confirmed.
Internet Connectivity
Verify that your internet connection is active and delivering the speeds you are paying for. Run speed tests from multiple devices and multiple locations within the office. Compare the results against your contracted bandwidth. If you have ordered a leased line, you should be seeing symmetrical speeds very close to the contracted rate. If you are on FTTP or FTTC, expect some variance but the results should be within reasonable tolerance.
Test at different times of day if possible. Some connectivity issues only manifest under load — for example, during the morning when all employees are logging in simultaneously, or during video conferencing peaks.
When running speed tests after your office move, use a wired Ethernet connection rather than Wi-Fi for your baseline measurements. Test from at least three different network points in the office. Run each test three times and take the average. Use reputable testing tools such as Speedtest by Ookla or the BT Wholesale speed checker. Document the results — you will need them if you need to raise a fault with your ISP.
Internal Network
Verify that all network switches are operational and that every Ethernet port in the office is live and connected to the correct VLAN. Test connectivity between devices on the same subnet and across subnets. Confirm that your DHCP server is assigning IP addresses correctly and that DNS resolution is working for both internal and external domains.
If your new office uses structured cabling, have the cabling contractor provide test certificates for every cable run. Faulty or poorly terminated cables are one of the most common causes of intermittent network issues in new offices.
Wi-Fi Coverage
Walk through every area of the new office with a Wi-Fi analysis tool and verify that signal strength is adequate throughout. Pay particular attention to meeting rooms, breakout areas, and any spaces with thick walls or metal partitions that could attenuate the signal. Common problem areas include server rooms (ironically), basement offices, and spaces adjacent to lifts or stairwells.
Phase Two: Core Business Applications
Once basic connectivity is confirmed, move on to testing every business-critical application. The goal is to verify that each application works correctly from the new location — not just that it loads, but that it performs all its core functions without errors.
Email and Communication
Test sending and receiving emails from multiple accounts. Verify that email signatures are rendering correctly, that attachments can be sent and received without issues, and that shared mailboxes and distribution lists are functioning. If you use Microsoft Teams, Zoom, or another video conferencing platform, conduct test calls — both audio and video — from multiple meeting rooms and workstations. Check screen sharing functionality as well, as this often reveals network configuration issues that simple browsing does not.
Cloud Services
Log into all cloud platforms your business relies on — Microsoft 365, Google Workspace, CRM systems, accounting software, project management tools — and verify full functionality. Pay special attention to any services that use IP-based access restrictions, as your new office will have a different public IP address. This is a particularly common issue with banking portals, government gateways (such as HMRC), and industry-specific regulatory systems.
Line-of-Business Applications
If you run any on-premises applications or connect to hosted application servers, test every function that your team uses on a daily basis. This includes creating, editing, and saving records; running reports; printing; and any integrations between systems. Do not rely on a quick login and assume everything is fine — have representatives from each department run through their typical daily workflows.
| System Category | Tests Required | Responsible Person | Priority |
|---|---|---|---|
| Email (Microsoft 365) | Send, receive, attachments, shared mailboxes | IT Lead | Critical |
| VoIP Phone System | Inbound, outbound, voicemail, call routing | IT Lead | Critical |
| Accounting (Xero/Sage) | Login, invoicing, bank feeds, reporting | Finance Manager | Critical |
| CRM System | Login, record creation, email integration | Sales Manager | High |
| File Sharing (SharePoint/OneDrive) | Upload, download, sync, permissions | IT Lead | High |
| Printers and Scanners | Print from all workstations, scan to email | Office Manager | Medium |
| Video Conferencing | Audio, video, screen share from each room | IT Lead | High |
Phase Three: Telephony and Communication Systems
Modern VoIP phone systems are heavily dependent on network quality. After an office move, telephony testing should be conducted methodically to ensure call quality meets acceptable standards.
Test inbound calls to your main number and verify that the auto-attendant or receptionist routing is working correctly. Test direct dial numbers for key staff. Make outbound calls to both landlines and mobiles. Check voicemail recording and retrieval. If you use call queues or hunt groups, test that calls are being distributed correctly.
Pay particular attention to call quality. VoIP calls are sensitive to network latency, jitter, and packet loss. If you notice choppy audio, echoing, or dropped calls, this likely indicates a network quality issue that needs addressing — possibly QoS (Quality of Service) configuration on your switches or router.
Phase Four: Security Validation
An office move introduces new security considerations that must be validated before you can consider the move complete. Your security perimeter has fundamentally changed, and assumptions that held true in your old office may not apply in the new one.
Firewall and Network Security
Verify that your firewall is correctly configured and all security policies have been migrated from the old location. Run a port scan from outside your network to confirm that only intended services are accessible. Check that intrusion detection and prevention systems are active and receiving updates. If you use a VPN for remote workers, test that VPN connections work correctly to the new office IP address.
Physical Security
IT security is not purely digital. Verify that your server room or network cabinet is properly secured with appropriate access controls. Check that CCTV covers key areas including the server room entrance. Ensure that screens in reception or public-facing areas are positioned so that sensitive information is not visible to visitors.
Security Tests to Pass
- Firewall rules migrated and verified
- External port scan shows no unexpected open ports
- VPN connections functional from remote locations
- Antivirus and endpoint protection reporting correctly
- Wi-Fi networks using WPA3 or WPA2-Enterprise
- Guest Wi-Fi isolated from corporate network
- Server room physically secured with restricted access
Common Security Gaps After a Move
- Old firewall rules left in place creating conflicts
- Default passwords on newly installed network equipment
- Wi-Fi using simple pre-shared keys instead of enterprise auth
- Guest Wi-Fi bridged to corporate network
- Server cabinet left unlocked or in an accessible area
- No UPS protection for critical network equipment
- VPN configuration still pointing to old office IP
Phase Five: Backup and Disaster Recovery Verification
This is the phase that businesses most commonly skip — and the one that can have the most devastating consequences if something goes wrong. After your move, you must verify that your backup and disaster recovery systems are functioning correctly in the new environment.
Run a full backup cycle and verify that it completes successfully. If you use cloud-based backup, confirm that data is being uploaded at acceptable speeds from your new internet connection. If you have on-premises backup devices, verify that they are correctly connected and reporting to your management console.
Most importantly, perform a test restore. Select a sample of files and at least one complete system image, and restore them to verify that your backups are not only running but are actually recoverable. A backup that cannot be restored is not a backup — it is a false sense of security.
Within forty-eight hours of your office move, verify the following: all backup jobs have completed successfully at least once, cloud backup upload speeds are adequate for your data volumes, on-premises backup hardware is correctly connected and reporting, a test restore of both files and a full system image has been performed successfully, off-site backup replication (if applicable) is functioning, and your disaster recovery plan has been updated with new site details including the address, ISP circuit references, and network configuration.
Creating a Post-Move Testing Schedule
Testing should not be confined to the first day after your move. Some issues only become apparent over time as different workloads and usage patterns exercise different parts of your infrastructure. We recommend the following testing cadence.
On day one, focus on critical path testing — can your team access their email, phone system, core applications, and the internet? On day two and three, conduct comprehensive testing across all systems using the framework outlined above. At the one-week mark, review any issues that have been reported and conduct targeted re-testing. At the one-month mark, conduct a full review of system performance, comparing against your pre-move baselines.
When to Involve Your IT Support Provider
If you have a managed IT support provider, they should be heavily involved in both the move planning and the post-move testing. A good provider will have a structured testing methodology and will take ownership of verifying that everything is working correctly. They should provide you with a formal sign-off document confirming that all systems have been tested and are operational.
If you do not have a managed IT provider and are handling the move with internal resources, consider engaging one specifically for the post-move testing phase. The cost of a day or two of professional IT consultancy is trivial compared to the potential cost of undetected issues causing disruption in the weeks following your move.
Planning an Office Move?
Cloudswitched provides end-to-end IT support for office relocations across the UK. From pre-move planning through to post-move testing and sign-off, we ensure your technology works flawlessly from day one in your new space.
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CloudSwitched
Centrally located in London, Shoreditch, we offer a range of IT services and solutions to small/medium sized companies.