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Passionate about providing the very best quality commercial cleaning services ranging across Greater London, Essex, and Hertfordshire, including Watford, Stanmore, and Rickmansworth.

  • Since our services are individually tailored to your needs, our approach will ensure that your personal cleaning requirements are catered to at no extra cost, regardless of the size or type of your company.
  • Our fully trained, uniformed, and insured cleaning staff provide a range of cleaning services to a variety of companies, including leisure centres and gyms, as well as schools, museums and vehicle showrooms to name a few!
  • We are SafeContractor accredited, meaning you can trust us to provide rigorous standards of health and safety at all times.
  • During the day, or out of hours – whenever suits! Our team will be flexible around your needs, providing daily or weekly services as required.

We’re extremely proud to provide professional cleaning to The Bentley Priory Museum in Stanmore, a World War II museum commemorating the Battle of Britain. Additionally, we help the NRG Gym chain with their daily cleaning requirements in both Kent and Hertfordshire, along with the private leisure centre in the Cassio Metro development in Watford, and the famous Serpentine Swimming Club in London’s Hyde Park.

Our commercial cleaning services cover a wide variety of premises, including pubs, restaurants, shops and factories – please feel free to get in touch to discuss anything you need.

Leisure Centres & Gyms

Our individually tailored services are available to any club, gym or leisure centre at any time. We are completely flexible, and will work around the times that suit you best; our services are available very early in the morning, late at night, or throughout the day. Our comprehensively trained, equipped, and insured staff have a wealth of experience working safely in changing rooms, around swimming pools, in public spaces, cafes, and reception areas. 

Thank you, in particular the effort made by Callver to understand the Centre’s requirements, and the flexibility offered to accommodate its many and variable needs is much appreciated.

Abbots Langley Community Centre, Hertfordshire

Vehicle Showrooms

Cleaning vehicle showrooms is a service we’ve offered for many years, and we’re proud to have worked with some of the largest brands in the country, with our services widely available across the South East, including Essex, Hertfordshire, and Greater London. Our services are available 7 days a week, with fully trained and uniformed staff who are equipped with the very best materials in order to make your showroom brilliantly clean.

If required, we can also help with cleaning workshop areas and receptions. Buffing and polishing services are also available, as well as machine cleaning of floors. A regular exterior window cleaning service using perfectly pure water can also be arranged. We’re very happy to offer cost reductions for dealer group bookings. 

School Cleaning

Individually tailored school cleaning is available across Hertfordshire to help you with all your cleaning requirements, at whatever time suits you best, whether that is during the school day or after hours. Just give us a call to discuss what you need.

All staff will be CRB checked in line with legal requirements, and trained and supervised to ensure the highest standards.

Deep cleaning during school holidays can be arranged so you can start each term in a beautifully clean environment. Specialist services are also available for school bathrooms if required.

Here’s what you can expect from us…

  • The ability to cover absence at short notice.
  • Cover over main holiday periods, including Easter, Christmas and the New Year.
  • We provide all chemicals and equipment for all cleaning tasks, including cloths, vacuums, sanitisers, freshners and de-scalers.
  • A comprehensive list of customers who are delighted with our service.
  • Over 14 years of experience providing bespoke cleaning services to Watford businesses.
  • Personalised service, designed just for you.
  • Additional, periodic deep cleaning services, including carpet cleaning and external, high level window cleaning.

Prices for commercial cleaning services are very personal, and are prepared following a brief visit to discuss your requirements. Prices will be sent to you the very same day, without any obligation.

Callver is committed to providing the best, most trusted cleaning service possible, using the very best staff around, with the best materials available at a reasonable and fair price... It’s as simple as that.

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Commercial Cleaning Blog


Cleaning to a beautiful museum on a lovely Thursday afternoon.


We're very proud to provide a perfectly tailored gym & leisure centre cleaning service. Fully insured, brilliantly trained, highly motivated.