Cleaning standards
See how the work is checked and what happens if something is missed.
How we check qualityCommercial office cleaning
Office cleaning that makes life easier
Reliable cleaning, flexible times and a friendly team you can call when you need us across London and the South.
Established in 2011Family-run serviceLondon & South coverage
Let’s see your office.Tell us what you need and we’ll put together a simple cleaning plan.
Reliable cleaning, without the hassle
A clean office. A stress-free service.
You should be able to arrive at work and know the cleaning has been taken care of. We focus on turning up, doing what was agreed and making it easy to speak to someone if you need help.
Good office cleaning should be straightforward. We agree what needs cleaning, how often it should be done, when our team can get in and who you can speak to if something needs attention.
During a free site visit, we look at the busiest areas, opening hours, washrooms, kitchens, floors and any extra services you may need. We then give you a clear plan and price, including how standards will be checked and what happens if something is missed.
01
Visit your office
We look around, listen to what you need and note the areas that matter most.
02Agree a clear plan
You receive a straightforward list of cleaning jobs, timings and costs.
03Start smoothly
We arrange access, products, equipment and the first quality checks.
Everything you need to feel confident
Clear answers. Friendly support. No surprises.
Easy changeover
Plan the move from your current cleaning company without the stress.
See how switching worksSafety documents
Ask for the health, safety and COSHH information you need.
View safety informationHelpful summary
Share our capability statement with colleagues or your buying team.
Open the packOne accountable relationship
Office cleaning and the services around it
Office cleaning
Routine cleaning for workspaces, meeting rooms, kitchens, washrooms, entrances and shared areas.
ExploreCarpet & floor care
Scheduled maintenance and specialist attention for high-use commercial flooring.
ExploreWashrooms & supplies
Cleaning and agreed consumable replenishment through one service plan.
ExploreWindow cleaning
Internal, external and high-level requirements surveyed for safe access.
ExploreDeep & specialist work
One-off, occasional and project-related cleaning with a defined cleaning plan.
ExploreTemporary cover
Discuss holiday, sickness, emergency and supplier-gap requirements.
ExploreWhat clients say
Trusted by commercial customers
“They carry out regular weekly cleaning but also various one off cleaning projects … We have worked with Mainstream Cleaning since 2015.”Sara Cook, Union Street Technologies
“Mainstream Cleaning Ltd have carried out builder and sparkle cleans on our projects for more than six years.”Dominik Böhm, Baufritz UK
“Mainstream Cleaning have looked after the London School of Musical Theatre for three years.”Adrian Jeckells, London School of Musical Theatre
Office-cleaning questions
How quickly can we receive a quote?
The first step is a short call or free site visit. Once we understand your office and what you need, we will confirm when your cleaning plan and price will be ready.
Can you work around our opening hours?
Yes. We can discuss early morning, daytime or evening cleaning, depending on access and what works best for your office. Our minimum service is two hours per shift.
What happens if a clean is missed?
Your agreement will explain who to contact, how we will put the problem right and how we will help prevent it happening again.
Do you provide COSHH information?
Yes. We can provide the relevant information for the products and cleaning jobs agreed for your office.
Can you take over from our current cleaning company?
Yes. We plan the changeover with you, covering access, keys, stock, equipment, priorities and the first few weeks of cleaning. We are experienced in dealing with TUPE when a cleaning contract changes hands.
Will we have one main contact?
Yes. Your cleaning plan will make it clear who you can speak to and who provides cover when that person is away.
Helpful cleaning guides
Clear answers for your next decision
Practical advice for choosing, changing and managing commercial cleaning.
Office cleaning
How much does commercial office cleaning cost in the UK?
Your price depends on the work your office actually needs, the time available and how often the team attends. A useful quote separates routine work, occasional tasks, supplies and optional extras so you can compare like for like.
Office cleaning
How often should an office be professionally cleaned?
Most offices need a mix of frequencies rather than one answer: high-touch areas, washrooms and kitchens may need attention every working day, while quieter rooms and detailed jobs can be scheduled weekly or occasionally.
Office cleaning
What is included in a commercial office cleaning service?
A sound office-cleaning plan normally covers agreed workstations, meeting rooms, reception, kitchens, washrooms, floors and shared spaces. The important point is not a generic list: it is knowing exactly which tasks happen on every visit and which happen less often.
Commercial cleaning
How do you choose a commercial cleaning company?
Choose the company that can explain how your site will be staffed, checked and supported, not simply the one with the glossiest quote. Ask for a site-specific plan, relevant evidence and a clear response when standards slip.
Commercial cleaning
What questions should you ask a commercial cleaning company?
The most useful questions reveal what will happen after the contract starts: who attends, how cover works, how quality is checked, what documents are available and how quickly a problem reaches someone able to fix it.
Commercial cleaning
Commercial cleaning contract checklist for facilities managers
Before signing, make sure the contract matches the operational promise. It should identify the cleaning plan, attendance, quality checks, issue handling, price changes, data and security expectations, notice terms and what happens at the end.
Office cleaning
What should be included in an office cleaning cleaning plan?
Your cleaning cleaning plan should turn expectations into an unambiguous working plan. For each area, state the task, frequency, required result and any access or handling rule, then connect it to inspections and reporting.
Quality assurance
Office cleaning SLA examples and useful KPIs
Useful cleaning SLAs focus on outcomes you can observe and actions your supplier can control: attendance, inspection results, issue response, completion of agreed work and closure of actions. The right targets must be agreed for your site.
Quality assurance
How to reduce office cleaning complaints
Complaints usually fall when expectations, ownership and follow-up become visible. Give people one simple reporting route, record the exact location, fix urgent problems, then use trends to correct training, time or frequency gaps.
Switching provider
How to switch commercial cleaning companies without disruption
A smooth change starts before the final day of the old contract. Work backwards from your preferred start date, check notice and employment-transfer questions, agree access and stock, brief the incoming team and schedule early quality reviews.
Switching provider
Does TUPE apply when changing cleaning contractors?
TUPE can apply to a change of cleaning contractor, but the answer depends on the facts. Identify the issue early, exchange accurate information through the proper process and take employment-law advice rather than assuming the staff simply stay or move.
Deep and specialist cleaning
COSHH requirements for commercial cleaning
COSHH requires harmful-substance exposure to be assessed and controlled. For cleaning, that means understanding the products and tasks, choosing suitable controls, giving people information and training, and keeping arrangements current when products or work change.
Deep and specialist cleaning
What health and safety documents should a cleaning contractor provide?
Ask for documents that match the work at your building: relevant insurance evidence, risk assessments and method statements where needed, COSHH information, training arrangements and incident contacts. Current, site-relevant records matter more than a large generic pack.
Commercial cleaning
Eco-friendly office cleaning: questions to ask suppliers
Move beyond a green label. Ask what products, dosing, equipment, packaging, transport and waste practices will change at your site, what evidence supports the claim and how the supplier will report progress without compromising hygiene or safety.
Office cleaning
Daytime vs evening office cleaning: which is better?
Neither schedule is automatically better. Daytime cleaning can improve visibility and response while evening cleaning reduces interaction with occupied desks. Compare access, disruption, security, energy use and the time available for detailed work.
Carpet and floor care
How often should office carpets be professionally cleaned?
Set carpet frequency by traffic, soil and appearance rather than a universal calendar. Entrances and main walkways often need more frequent interim care, while low-use rooms can follow a longer planned cycle.
Carpet and floor care
Office carpet cleaning methods compared
Extraction, low-moisture and spot treatments solve different problems. Choose the method after checking carpet construction, soil, stains, drying window, access and manufacturer guidance, then test sensitive materials where appropriate.
Window cleaning
How often should commercial windows be cleaned?
Window-cleaning frequency depends on location, weather exposure, traffic film, building presentation and access cost. Street-facing glass and entrances may need more attention than upper or sheltered glazing.
Window cleaning
How to choose a commercial window cleaning company
Choose a supplier that surveys the glazing and explains the safest suitable access method. The quote should identify areas, exclusions, frequency, weather arrangements, competence and the documents required before work starts.
Washrooms and consumables
Office washroom cleaning checklist and frequency guide
A useful washroom checklist covers cleaning, inspection and replenishment. Frequencies should reflect occupancy and peak periods, with a simple record for issues such as leaks, blockages, damage or repeated stock-outs.
Washrooms and consumables
How to manage office washroom consumables
Avoid shortages and excess stock by setting dispenser-compatible products, minimum levels, a count-and-order routine and one clear owner. Use actual consumption and occupancy changes rather than guessing from last year’s order.
Deep and specialist cleaning
Office deep cleaning checklist for facilities managers
Start a deep clean with the outcome, not a generic list. Inspect the site, agree areas beyond routine cleaning, plan access and drying, protect sensitive equipment and define how completion will be checked before reopening.
Deep and specialist cleaning
After-builders cleaning checklist for commercial premises
An after-builders clean works best when construction is genuinely ready, defects are separated from dirt and waste responsibilities are clear. Plan dust removal in stages, protect new finishes and leave time for a final inspection before handover.
Temporary and emergency cover
Emergency cleaning cover for offices
When normal cleaning fails, give a replacement supplier a short, accurate brief: location, access, priority areas, required times, hazards and the minimum acceptable result. Confirm availability and price before promising cover internally.
Temporary and emergency cover
How to plan holiday and sickness cleaning cover
Ask how planned and unplanned absence is covered before the contract starts. The plan should explain notice, replacement competence, site briefing, access, supervision and how you will be told if the normal service could change.