How to choose an office cleaning company in the UK (2026 guide)

Choosing an office cleaning company sounds simple until you start comparing quotes. Prices vary wildly, promises sound the same, and it's hard to tell who will actually deliver consistent results week after week.

This guide covers what to look for, what to ask, and the warning signs that help you avoid a contract you'll regret.

1. Check their insurance and credentials

Before anything else, confirm the basics:

• Public liability insurance — at least £1 million, ideally more. Ask for proof.
• Employer's liability insurance — required by law if they have staff.
• DBS checks — especially important if cleaners will have unsupervised access to your building.
• Industry certifications — not essential, but they show the company takes standards seriously.

If a company can't produce these documents quickly, that's your first red flag.

2. Ask about team consistency

One of the biggest complaints about cleaning companies is different people turning up every week. Inconsistent teams mean inconsistent results.

Ask directly: “Will the same team clean our office each time?” A good company will assign a regular team to your site and only rotate when someone is on leave — with a trained replacement, not a random fill-in.

3. Understand what's included in the quote

A low headline price often hides a narrow scope. Make sure the quote clearly states:

• Exactly which areas are cleaned each visit
• Whether products and equipment are included (they should be)
• What counts as an “extra” and how much those extras cost
• Whether consumables (toilet rolls, hand soap) are included or separate

If the quote is vague, the invoice won't be. Get specifics upfront.

4. Look at contract terms

Some companies lock you into 12- or 24-month contracts. That's fine if the service is good — but it's a risk if you haven't worked with them before.

A company confident in its service will offer a monthly rolling contract. You stay because the cleaning is good, not because you're locked in. If they insist on a long fixed term from day one, ask why.

5. Ask about quality control

Cleaning quality tends to drop after the first few weeks unless there's a system to maintain it. Ask:

• How do you check the quality of each clean?
• Who supervises the team?
• What happens if something is missed?
• How quickly can issues be corrected?

The best companies have a named supervisor who inspects work regularly and corrects problems the same day — not “next week.”

6. Check their communication setup

You shouldn't have to chase your cleaning company. Before signing, find out:

• Who is your main point of contact?
• How do you report issues or request changes?
• What's the typical response time?

A single named contact who knows your building is far better than a generic support email that takes days to respond.

7. Ask about their products

Cheap cleaning chemicals can damage surfaces, leave residues, and create an unpleasant environment for your staff. Ask what products they use and whether they're:

• UK-certified and approved by regulatory bodies
• Eco-friendly and safe for office environments
• Supplied by a reputable manufacturer (not generic white-label bottles)

8. Request references or case studies

Any established cleaning company should be able to provide references from current clients. If they can't — or won't — that tells you something.

Better still, ask for a reference from a client in a similar industry or office size to yours. Their experience will be the most relevant.

Red flags to watch for

• No site visit before quoting. A company that quotes without seeing your office is guessing.
• Unusually low prices. If it's significantly cheaper than everyone else, the staff are probably underpaid — and that means high turnover and poor results.
• Vague scope of work. If the proposal doesn't list specific tasks, you'll argue about what's included later.
• No insurance proof. If they hesitate to show you their policy, walk away.
• Long lock-in contracts with no trial period. Confidence in service quality means flexibility on terms.

A quick checklist before you sign

How we approach it at Office Clean

We operate on monthly rolling contracts, assign consistent teams to every office, and use Evans Vanodine products (UK-certified, approved by regulatory bodies). Every team is supervised, DBS-checked, and trained before they enter your building.

Our 95% client retention rate and 100% referral-based client base speak for themselves. We're not the cheapest — but we're consistent, and that's what keeps offices properly clean month after month.

Note: This guide is written for UK businesses. Regulations and standards may differ in other countries.