Choosing an outsourcing provider: 10 questions for UK practices

Picking an outsourcing provider is a bit like hiring — except the person you're hiring sits in someone else's building. Most disappointments don't come from a provider being "bad"; they come from a practice never asking the awkward questions up front. Use these ten as a checklist when you speak to any provider, including us.

1. Who actually does the work — and is it the same people each time?

Ask whether you'll have a consistent team who learn your clients, or a rotating pool. Consistency is what turns outsourcing from "tasks sent away" into "capacity added". Ask how cover works during leave and busy periods.

2. Who reviews the work before it reaches you?

A good provider has a review step of their own, so you're not the first person to spot errors. Ask who reviews, what their qualifications are, and what you'd still be expected to check yourself.

3. Do they work in your systems, or make you adopt theirs?

If you use Xero, QuickBooks, Sage, IRIS or similar, the provider should work inside them. Having to change how your practice runs to suit a supplier tends to create more friction than it saves.

4. How is client personal data transferred and protected?

If any work is done outside the UK, UK GDPR requires an appropriate transfer safeguard. Ask what agreements are in place (for example a Data Processing Agreement and a recognised transfer mechanism), and ask to see them. Your own data protection obligations to your clients don't disappear when work is outsourced, so take professional advice if you're unsure.

5. What confidentiality and access controls apply?

Ask how access to client files is limited, whether staff are bound by confidentiality terms, how devices and logins are secured, and what happens if something goes wrong. Ask about any certifications the provider holds, and ask them to say clearly which they have and which are still in progress.

6. What qualifications and UK-rules knowledge does the team have?

UK compliance work — VAT, payroll, Making Tax Digital, Companies House — depends on up-to-date knowledge of UK rules. Ask how the team keeps current and who is accountable for technical accuracy.

7. How does onboarding work, and can you start with a pilot?

A sensible provider will suggest starting with a limited set of clients or one type of work, so you can judge quality before committing more. Be cautious of anyone who wants everything handed over on day one.

8. What turnaround can you expect, and how do peaks work?

Ask for turnaround times in writing for each type of work, and how the arrangement flexes around January, quarter-ends and deadline weeks. Capacity that disappears when you need it most isn't much use.

9. How will you communicate, and what happens when there's a problem?

You want a named point of contact, a predictable rhythm of updates, and a clear route for escalation. Ask for an example of how a past issue was handled.

10. What does it cost — and what does leaving look like?

Be clear on what is included, what is extra, and how pricing changes as volumes grow. Just as important: how would you exit? Check notice periods, and how your files, working papers and data are handed back.

Turning the answers into a decision

Score each provider from 1 to 5 on every question, then weight the questions that matter most to your practice — for many firms that's review quality, data protection and systems fit. A provider that is strong on the things you care about, and open about its limits, is usually a better bet than the one with the slickest pitch.

If you're still deciding where to start, our guide on what to outsource first, and what to keep in-house is a good companion to this checklist.