About Us

We Are Leaders In Mechanical & Electrical Contracting

Onco's Van

Why Choose Us?

We will provide you the best work you can dream of!

ONCO SES LTD are a family run business that was established in 2020 by it’s founder Callum O’Neill. We have more than 50+ years experience across our workforce in the electrical industry, Ranging from new build domestic though to large complex commercial & industrial installations.




Local & Reliable Electricians.

Fully Registered and Qualified

As a NAPIT approved contractor, we are fully qualified for any electrical work. Being a NAPIT certificated Scheme Member means we have demonstrated our competence, we hold the necessary insurance and have the right processes and procedures to assure compliance. Being a NAPIT registered installer means we are able to complete work safely and to legally required standards.

We cover the whole of the midlands area but we are nationwide, so if you’re not based in and around Birmingham, that is fine, get in touch! We work with a network of trusted professionals.

As a company, we are fully dedicated to client satisfaction. In all that we do, we strive to work meticulously and with integrity in order to provide high quality results in all of our projects.

We pride ourselves on repeat business and customer feedback. As a company, we believe that our drive to continue to learn new skills helps aid our success.

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