How to Move Your Team Off WhatsApp for Work: A Practical Guide for UK Small Businesses
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The Group Chat Problem
WhatsApp is excellent for family and friends. As the place your business makes decisions, shares documents and coordinates work, it creates problems that are easy to ignore until the day you cannot.
Some of those problems are practical: messages buried, no real search, no control when someone leaves. Others are about UK GDPR, and they are more manageable than alarming, but they are worth sorting before they matter.
This guide covers what actually goes wrong, what to move to, and how to make the switch stick.
Why WhatsApp Does Not Work for Business
Business Data Lives on Personal Phones
When your team uses WhatsApp for work, the conversations, files and decisions sit on their personal devices. You have no copy, no access and no control.
If someone leaves, that history goes with them. You can remove them from the group, but everything already sent stays on their phone. If they shared a customer’s number, discussed a complaint or forwarded a contract, you cannot retrieve or delete any of it.
For most small businesses that is an inconvenience. If you handle health, financial or otherwise sensitive client information, it is a genuine governance gap.
Subject Access Requests
This is the part most guides skip.
Under UK GDPR, individuals can ask for a copy of their personal data, and you must respond within one calendar month. That can be extended by a further two months where a request is complex or where someone has made several, but you have to tell them within the first month that you are extending.
Personal data processed for business purposes is in scope regardless of which app processed it. Whether it sits in your CRM or a group chat on someone’s phone makes no difference to the obligation, and the ICO has published guidance for organisations using private messaging channels for official business.
The Data (Use and Access) Act 2025, in force since 5 February 2026, codified the standard as a reasonable and proportionate search rather than an exhaustive one, and added a requirement to have a process for handling data protection complaints. That helps, but “reasonable and proportionate” still means searching what you can actually reach, and you cannot reach a former employee’s phone.
To be straight about the risk: using WhatsApp for work is not an automatic breach, and the ICO is not going to come knocking at a five-person plumbing firm over a group chat. But if a request or a dispute does arrive, being unable to produce records is an uncomfortable place to be, and it is avoidable.
Retention
UK GDPR’s storage limitation principle says you should not keep personal data longer than you need it, and you have to be able to show how you decide that. In practice, that means writing down retention periods for the categories of data you hold.
On a business platform you can set retention rules centrally. On WhatsApp, messages sit on people’s phones indefinitely with no mechanism to apply any schedule at all.
No Admin Control
On a proper messaging tool, removing someone’s account removes their access immediately while the history stays in your system. On WhatsApp, an admin can remove a member from a group, and that is the extent of it: no audit trail, no account to disable, no way to revoke what has already landed on their device.
What to Use Instead
You do not need to spend much to fix this.
Pumble is the strongest free option. Unlimited users and unlimited message history, which is rare, so a ten-person team can move across without paying. Know the limits before you commit: 10GB of storage across the whole workspace, three app integrations, and voice and video restricted to one-to-one calls. Group calls come with Pro at €2.49 per user per month billed annually, or €2.99 monthly. Pumble prices in euros.
Slack is the market leader and the best integrated. The free plan keeps only 90 days of searchable history, which defeats the point of moving. Pro lists at £7 per user per month, currently discounted to £3.50, and Business+ lists at £14.40 with a £7.20 offer. Budget on the list price, because promotions end.
Microsoft Teams is the obvious answer if you are already in Microsoft 365, but check which plan you have. Microsoft sells versions with and without Teams: Business Basic is £5.40 per user per month with Teams or £4.20 without, and Business Standard is £18.10 or £15.60. Teams Essentials exists standalone at a few pounds per user; confirm the current price.
Google Chat is included with Google Workspace, which starts at £5.90 per user per month excluding VAT on Starter, rising to £11.80 on Standard. Clean, simple and adequate for most small teams.
For a business moving off WhatsApp with no existing subscription, Pumble is the natural starting point. For a business already paying Microsoft or Google, use what you have.
How to Make the Switch
1. Pick One Tool and Commit
The worst outcome is running both indefinitely. Decide, then hold the line. Pumble if you want free and simple, Teams or Google Chat if you already pay for the ecosystem.
2. Decide What You Are Moving
Not the history. Migrating old WhatsApp conversations creates more problems than it solves, and much of it is personal data you would then be responsible for holding.
What you are moving is behaviour. Be explicit about the structure:
- Channels for projects and topics, such as jobs in progress, admin, general
- Direct messages for one-to-one conversations
- Files shared through the platform rather than email or WhatsApp
Write it down. A single page sent to the team is enough, and people behave better when the expectation is visible.
3. Set Norms on Day One
Most business messaging tools fail because nobody decided how to use them. Are people expected to reply outside working hours? Is the general channel work only? What is a reasonable response time?
There is no statutory right to disconnect in the UK, so this is a matter of your own norms rather than law. Agreeing that out-of-hours messages are visible but not urgent costs nothing and prevents a lot of resentment.
4. Handle the Reluctant One
There is always one. They prefer WhatsApp, they find the new app confusing, and they keep posting in the group after the switch.
This needs a direct conversation rather than a nudge. Work communication happens in the work channel because the business needs to keep control of its own information. If you are the owner, saying plainly that the WhatsApp group is no longer monitored for work usually settles it within a week.
5. Close the WhatsApp Group
Give it two to four weeks, then close it properly. Pin a message saying where everyone has gone, then archive or leave.
Keeping it open as a backup means keeping it alive. Be decisive.
FAQ
Is it illegal to use WhatsApp for business in the UK?
No. It makes compliance harder rather than impossible, particularly around access requests, retention and control. The ICO takes a proportionate approach and small businesses are unlikely to face enforcement over a group chat, but it is not good practice for client or sensitive data.
How long do I have to answer a subject access request?
One calendar month, extendable by two further months for complex or repeated requests, provided you tell the person inside the first month.
Do I need to tell clients we have moved?
If you communicate with clients over WhatsApp, yes. Tell them where to reach you now. It is courtesy as much as compliance.
Is WhatsApp Business any better?
It adds a business profile, quick replies and catalogues, which helps sole traders and small retailers. It does not solve admin control, retention or access requests, so it is an improvement on a personal account rather than a replacement for a team tool.
How long does the move take?
For a team under fifteen, one to two weeks from decision to a quiet WhatsApp group. Setup takes a couple of hours. The behaviour change takes the rest.
Moving Your Team Off WhatsApp: The Bottom Line
This is not a big project. A few hours of setup, one clear conversation, and the willingness to be firm for a fortnight.
What you get is admin control, searchable history that belongs to the business rather than to individual phones, and a much better position if an access request or a dispute ever arrives.
For most UK small businesses with no existing subscription, start with Pumble: free for unlimited users with unlimited history, about half an hour to set up, and simple enough for the least enthusiastic member of the team. If you already pay for Microsoft 365 or Google Workspace, use what is already in the bundle.
Prices and plan features correct at time of writing and subject to change; confirm current details with the provider, and note that Pumble prices in euros. This article is general information about UK data protection, not legal advice, and it does not take account of your circumstances. Check the current position with the ICO and take advice on your own obligations before relying on anything here.