Window Cleaning in London

Window cleaning supports a brighter, more professional looking site. We clean internal and external glazing to improve appearance and maintain clear visibility across the building.

What this service includes

Want to enquire?

Or speak to directly to our team on

Clear glazing that improves the feel of a building

Clean windows change how a site looks and feels, inside and out. Dirt, smears, and weathering reduce light and make buildings appear poorly maintained, especially around entrances and customer facing areas.

We provide window cleaning for commercial buildings, with scheduling planned around access and site requirements. The focus is consistent results, safe working, and a finish that supports both presentation and the working environment.

Better first impressions

Cleaner entrances and glazing that looks maintained.

More natural light

Clearer glass helps brighten internal spaces.

Planned cleaning routines

Regular schedules prevent build up and reduce reactive cleans.

Commercial safe approach

Methods selected to suit access, height, and site needs.

Who this service is for

Offices and corporate buildings

Support with maintaining clear glazing and partitions, improving presentation for staff and visiting clients.

Retail and customer facing sites

Window cleaning that keeps shopfronts and entrance areas clean, helping maintain a professional appearance.

Managed properties and shared buildings

A planned service that keeps glazing standards consistent across multiple elevations and shared spaces.

Cresswell is ISO certified

How window cleaning is delivered

Confirm access requirements

We review glazing locations and safe working needs.

Plan the schedule

Timing is agreed around footfall and site operations.

Complete the clean

Internal and external glazing is cleaned thoroughly.

Maintain consistency

Regular cleans keep results stable over time.

Trusted by 1,000+ Customers

Consistently excellent service

Cresswell provide a consistently excellent service and maintain a high level of cleanliness and comfort throughout the office space. There have been many occasions when Cresswell have gone above and beyond the service spec – they truly care about the service they provide to their clients
Petronas Energy Trading Ltd

High quality cleaning standards

Having worked with Cresswell for a number of years, I am continually satisfied with the excellent high quality cleaning standards provided. The company is reactive and nothing is too much trouble

BMO Real Estate Partners

A responsive cleaning company

They are a responsive company to deal with and remain highly reactive to our continuous needs and I believe the service we receive is excellent
Metrus Property Advisors Ltd

Quick, easy and clear

Cresswell are absolutely brilliant. In addition to the immaculate cleaning they provide, I love the communication, it’s so quick, easy and clear. Everything is done exactly as you request and they are adaptive to your every need. I cannot recommend them highly enough

CyrusOne

High level contract

Cresswell have carried out high level contracts throughout Central London and the M25 greenbelt for us. They provide a reliable and professional service and I would have no hesitation in recommending them

CMM Interiors Ltd

Consistently excellent service

Cresswell provide a consistently excellent service and maintain a high level of cleanliness and comfort throughout the office space. There have been many occasions when Cresswell have gone above and beyond the service spec – they truly care about the service they provide to their clients

Petronas Energy Trading Ltd

Window cleaning questions explained

Yes. We can support internal glazing, external windows, and partitions, depending on the site.
It depends on access and building requirements, and we assess feasibility and safe methods before confirming scope.
Frequency depends on location, exposure, and expectations, and we can advise based on your site.
Yes. We can plan work to reduce disruption, particularly for entrances and customer areas.
Yes. Entrance glass and high visibility areas are commonly included, along with frames where agreed.