Our History

Trusted and Reputable Company

OCO Ltd is family run business, established in 1979. We originally began trading in the gas mechanical industry, serving both commercial and domestic clients. Over the last 40 years we’ve grown and expanded, introducing an electrical department in 1998 and a specialist water treatment department in 2002.

Investing and always growing

More recently we’ve introduced a dedicated projects division that has successfully undertaken many refurbishment, installation and upgrade work packages for various clients. Along with our purpose-built, state-of-the-art descaling and acid clean unit situated at our South London complex, we are now able to respond to industry demands effectively, efficiently and with great expertise.

Highly reputable & experienced company

We have worked hard over the last four decades to provide an excellent service to each and every client. We’re very proud of the relationships we’ve built and in turn, to have been recognised by Local Authorities, Housing Associations and other Public and Private Sectors as being a highly reputable, experienced and trusted company.

Trusted reputation

As part of our on-going commitment to provide an exceptional high-quality service embracing all areas within the environment we work, we continue to build upon our trusted reputation by investing in other areas of our industry to offer our clients a vast variety of services.

Equal opportunities employer

We are an equal opportunities employer and are proud of our diverse and vibrant work force.

OCO Limited’s Timeline


OCO Heating and Mechanical Engineers Limited was established by Christopher Oborne, Philip Cowdery & George Oborne


Anthony Harrison joined OCO as a Director


Company name change to OCO Limited


Electrical Division established


Specialist Water Hygiene Treatment Department established


OCO registered with the environment agency


OCO achieved ISO 9001 (Quality) & 14001 (Environmental) accreditations


South London office expanded to encompass an ACS certified Training Centre – Bromley Training & Assessment Centre (BTAAC)


Projects Division established


John Moore named a company Director


OCO Water established – Further office expansion to encompass a purpose built descale unit

If you would like any more information about OCO Limited and the services we offer, please do not hesitate to contact one of our helpful and friendly team. Our staff members are always available to answer any questions you may have and provide you with experienced and trusted advice.

Need to find out more on our services?

Contact Us

Get in touch

To speak to us about any of our products or services, please feel free to contact us by telephone, email or via the contact form.

Head Office

020 8315 5600

General Enquiries


To speak directly to a specific service department please visit our contact page by clicking link below:

Covid - UK government approved guidelines

OCO Limited work according to UK government approved guidelines, health and safety at work laws and legislation. We are always here to help you.
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OCO Limited is a Limited Liability Company
Company No: 01418006 | VAT Registration Number: 250178478
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