When teams start taking annual leave in July and August, IT systems don't stop running — but the people who manage them do. A summer IT checklist helps SMEs identify and resolve issues before anyone is unreachable. This guide covers the practical checks every business should complete.

What's on a summer IT checklist for UK SMEs?

Start with the systems that keep the business running when key people are away. Each item below includes what to check and why it matters.

Email and communication systems

Verify that email servers are operational and that shared mailboxes have active coverage. Test that out-of-office replies are configured for absences, and confirm that voicemail forwards to an available person. If your team uses Microsoft 365 or Google Workspace, check that admin access isn't tied to a single individual who might be on leave.

Outlook calendar sharing and shared contacts are often overlooked during routine maintenance — make sure they're accessible to at least two people before the holiday period begins.

Backups and disaster recovery

Verify that backups are running on schedule and test a restore from your most recent backup — not just confirming the backup ran, but actually recovering a file or folder. Confirm the restore point is within your organisation's required retention period and that off-site copies exist if your primary backup is local.

Backups are a legal requirement under the Data Protection Act 2018, but testing them is good practice that most businesses skip until something goes wrong. If you don't have a tested backup process, talk to us about your options.

Security and access controls

Review user permissions before anyone goes on leave. Remove or suspend access for former employees, contractors whose work has ended, and accounts that no longer need the same level of access. Ensure multi-factor authentication is enabled across all admin accounts.

Keep patch management running during the holidays — these aren't optional during summer, they're the baseline defence every SME needs. Book a Security Triage Call and we'll walk through your specific setup.

Critical system documentation

Document the key processes that someone needs to follow if things go wrong while the team is away. This includes:

• Admin login details stored in your password manager

• Vendor contact information for critical services (hosting, telecoms, security)

• Network diagrams and system architecture notes

• Escalation procedures for common issues

This documentation should be accessible to at least two people, not stored on a single laptop that might be on holiday.

Network and infrastructure

Check that firewalls, routers, and wireless access points are functioning correctly. Verify that your internet connection has adequate bandwidth for the reduced staff count — sometimes businesses find they can downsize a line during summer, freeing up budget.

Test your phone system to ensure call routing works when staff are away, and confirm that any mobile or hybrid working arrangements have the VPN or remote access tools functioning properly.

How to prioritise your summer IT checks

Not every item on a summer IT checklist carries the same urgency. Here's how to rank them:

Must-do before anyone leaves: Backup test restore, access control review, critical system documentation. These are the items that prevent real disruption.

Good practice for next time: Vendor contact list update, password manager audit, documentation refresh. Valuable improvements that don't cause immediate problems if deferred.

Nice to have: Network optimisation, bandwidth review, infrastructure tidying. Worth doing but not time-critical for holiday readiness.

Common summer IT pitfalls

The most frequent problems we see when businesses delay their summer IT checks:

• Single points of failure. One person holds all the admin passwords. When they take leave, no one else can access critical systems.

• Untested backups. The backup software ran every night, but no one verified that the data could actually be restored.

• Stale vendor contacts. The hosting provider's support number had changed, or the telecoms account was under a different business name.

• Security gaps left open. Contractor accounts weren't suspended after their project ended, leaving unnecessary access to company systems.

These aren't hypothetical scenarios — they're the pattern we see when businesses push summer IT preparation to the bottom of the priority list.

Making your summer IT checklist work for your team

A checklist is only useful if someone actually uses it. Here's how to make yours practical:

Assign ownership. One person should be responsible for each item on the checklist. If that person is taking leave, ensure a backup owner is designated.

Time it right. Start your summer IT checks in early July — not the week before someone leaves. You'll get more honest answers and have time to fix issues that arise.

Keep it simple. A checklist that takes more than an hour to complete will get abandoned. Focus on the items that matter most for your specific setup.

Review it. After the holidays, compare what happened against your checklist. This feedback loop makes next year's version better.

When to call in help

Some items on a summer IT checklist are straightforward enough for an internal team to handle. Others — particularly backup testing, security audits, and infrastructure reviews — benefit from external expertise.

If you're unsure where to start, book a Security Triage Call and we'll walk through your specific setup.

FAQ

When should UK SMEs start their summer IT checks?

Early July is ideal. This gives you time to fix issues before teams are fully away and ensures someone is available to act on any problems discovered.

What's the most important item on a summer IT checklist?

Testing your backup restore process. Knowing you can recover from your backups is more valuable than confirming they ran on schedule.

Should I delay IT maintenance during the summer?

Routine patching and security updates should continue regardless. However, non-critical infrastructure projects can be scheduled for autumn when the full team is back.

How often should I review my summer IT checklist?

Review it after each holiday period. What worked, what didn't, and what new risks emerged — all of this makes next year's checklist more effective.