Our History

Onesys - offering the best business solutions for your business. 
Now the fastest growing reseller of Sage software, Onesys provide cost-effective off-the-shelf software packages for SMEs and highly customised solutions to meet the business needs of large, established businesses. Onesys have over 650 years collective experience and the customers that have been with us from the beginning have benefitted from our client-focused, consultative approach.

Our offices UK wide mean that we are local to our customers no matter where they are.
Onesys have successfully supplied and supported software solutions for clients such as The Bank of England, Procter & Gamble, DEFRA and PwC. Onesys also provide software solutions for businesses that distribute Metropolitan police uniforms and allocate materials for Jaguar cars. We have an experienced team in Manufacturing, Distribution, Education and providing the Professional Services sectors with highly usable, scalable solutions.

Our team of developers are highly skilled in all the latest technologies and our own products OrderlineBOX (software for the corrugated packaging industry) and Coretime (Timesheet, Expense and Project Management software for the Professional Services industry) showcases that. Our Microsoft Azure cloud platform offers our customers a secure and hardware free solution for purchasing their systems ensuring that they can access their key business data anytime, and anywhere.

By focusing on exemplary customer service, Onesys have become a Sage Platinum Partner as well as a Sage Strategic Partner, recognising the breadth of Onesys’ knowledge, experience, and dedication to providing outstanding Sage support.

Our Awards

We have been providing successful business solutions since 1972 and during that time we've picked up a few awards and accreditations along the way. Discover just some of the things that make us proud to be the largest UK partner of Global Business Systems and the Sage Professional Services Division.

Sage 200 Strategic Partner Sage 50 Business Partner of the Year Sage Development Partner Sage Platinum Partner


Onesys is a fully Accredited Sage Business Partner.

We have worked closely with Sage for many years, supplying a range of software solutions to businesses of all sizes throughout the UK. Onesys supply software solutions for new, small or growing business including Accounts, Payroll and Forecasting as well as to medium to large businesses requiring advanced accounting, CRM and ERP solutions.

We are the Experts when it comes to Sage

Sage Platinum
This award recognises their excellent track record in providing consultancy, customer service and support across the entire range of Sage solutions for small and medium sized businesses.
Sage Expertise
As a Sage Business Partner we can pass on a wide range of benefits to our customers including expert support, high levels of training in Sage products and up-to-date advice.
Sage Support
Our Sage Business Partner status means we can supply high levels of support to all customers that use Sage products. We have in-house technical expertise as well as direct access to contacts.
Sage Developer
Onesys also offer Sage Software Development services producing bespoke and complementary applications for supported Sage solutions.

Our Partners

Onesys has joined forces with a number of partners who have selected us because of our extensive and long-standing experience in providing systems solutions to SMEs in UK industries such as Food & Beverage, Manufacturing, Distribution & Warehousing, Corrugated Packaging and Professional Services.

We understand that the systems we provide are critical to both the day to day and longer term success of our customers. Therefore our software is designed for reliability, availability and high performance. Because we and our reseller partners are sector specialists we can deliver software that meets the specific needs of our customers, right "out of the box". This means that they in turn enjoy a rapid return on their investment and genuine competitive advantage.


Need More Information? 

If you would like to discuss how our team and our ICT solutions can help you manage your business better, then please email or call us for more information. 

One of our friendly members of our team will be happy to discuss your requirements with you. 

Telephone: 01423 330335

Request a Callback

Making Tax Digital 

Making Tax Digital is an HMRC initiative that aims to revolutionise the UK tax system and ultimately bring an end to self-assessment.
We use cookies to ensure that we give you the best experience on our website. This includes cookies from third party social media websites if you visit a page which contains embedded content from social media. Such third party cookies may track your use of the Onesys website. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on the Onesys website. However, you can change your cookie settings at any time. For more information view our Privacy Policy.

If you would like to turn off non-required cookies (such as any third-party cookies) please turn the toggle to off.
Additional Cookies
Accept Cookies