About Bronsens

Bronsens has been a reassuring presence in Oxfordshire for more than 100 years. Founded in 1891, Bronsens grew quickly to become an established major accounting practice under the name of William Bayliss & Co. in Oxford.

(Picture to the right – Bronsens involved in Alzheimer’s charity event)

Following various practice changes and mergers over the century, the business became Bronsens in 1992. Having established the trusted Bronsens brand the business then acquired offices in Chipping Norton, Witney and formed a company to provide payroll and bookkeeping services.

CIS has been working with bronsens for over 10 years delivering IT solutions and solving the challenges of an ever growing firm of accountants who utilise technology to deliver a trusted service to their own clients.
Neill Lawson-Smith, Founder and Managing Director, CIS.

Key Business Highlights
  • Traditional IT set-up wasn’t efficient in handling Bronsens daily workload – CIS increased productivity through migrating Bronsens data and servers to the CIS Private Cloud (vBubble), installing better communication links to increase overall communication speed between the offices.
  • Remote issues caused problems while accessing important data – CIS resolved this by allowing Bronsens to work from one data set across all sites (Witney and Chipping Norton) for flexible and concise working in the Private Cloud.
  • No way to access specialist IRIS accountancy software remotely – CIS improved flexibility by running Bronsens IRIS Accountancy Suite in the CIS Private Cloud. This allowed Bronsens to utilise the software on the move without having to come back to the office every day, accessing that system from any device, on any internet connection, from any location, giving complete working flexibility.
The Challenge

Bronsens came to CIS with the vision for secure and flexible remote working from both of their Oxfordshire offices.

With the traditional and expensive IT set-up, it was becoming increasingly difficult for Bronsens to manage their internal tasks efficiently and to handle their client’s data in a secure environment. Maintenance of the servers was a constant battle and their aged systems needed updating.

Bronsens wanted to be sure that their backups were working correctly and being regularly tested. This ensured they could recover key business data on demand.

CIS helped us to achieve our business goal through moving to the secure Private Cloud. As an Accountancy firm, we have witnessed a dramatic shift in smarter IT practices that have improved our way of working and allowed us to stay ahead of the competition.
Mark Winks, Managing Director, Bronsens.

The Solution

CIS delivered a unified secure Private Cloud Solution for all of Bronsens offices, helping with accessing important data in a highly secure environment from any location on any device.

Bronsens store large amounts of sensitive financial data for their clients so it was important that CIS implemented a regular backup procedure of Bronsens Cloud servers, this also included a regular test plan.

CIS minimised the risk of an IT disaster for Bronsens and their clients by removing all data from the old physical server and hosting everything in the Cloud – located at an Ultra-Secure Nuclear Datacentre.

CIS created a Cloud environment so that Bronsens could access and utilise their important IRIS Accountancy software remotely, increasing productivity in the office while reducing Bronsens need to travel to work. This Private Cloud solution delivered a flexible ‘working hours’ policy, allowing access from home to all of the systems for Bronsens, whilst maintaining the highest levels of security.

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Client Feedback

We are delighted to be working with CIS, the project is already looking well organised and innovative. CIS delivers a prompt professional service with trusted knowledge we can rely on at all times.

John Story, Head of IT

St Paul’s Cathedral

CIS have been our go-to IT supplier for nearly 20 years, and throughout that time they have been flexible, consultative, and above all putting our business at the forefront of their advice. I would be very pleased to recommend them for any company that needs to have a real partnership with their IT company.

Graham Hughes, Managing Director

Rovema UK Ltd


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CIS Overview



  • CIS Private Cloud
  • Infrastructure as a Service
  • Backup & Disaster Recovery
  • Remote Desktop Services


  • Anti-Virus & Ransomware
  • Extensive Encryption
  • Firewall & Next-Gen UTM
  • Penetration Testing
  • Digital Rights Management
  • Phishing
  • Mobile Device Management


  • Exchange Server Hosted & On Prem
  • Mail365
  • Unified Communications
  • Office 365
  • Mobile & VoIP Telephony
  • Internet Connectivity


  • Consultancy
  • Analysis & Audit Services
  • User Training & Enablement
  • Fully Managed Support


Since its inception in 1989 CIS’ philosophy has always been the same. We believe that in order for our team mates to provide the best possible service to our clients and to remain motivated and inspired themselves, we have to create a positive and stimulating working environment. One that encourages ambition, a continued exchange of ideas and dialogue, hard work, performance and loyalty. We have always rewarded our staff for going the extra mile and for embracing our company ethos but we also aim to make their working experience enjoyable and fun, working on the basis that humour can go a long way and fairness and respect are paramount.



Even though we say this ourselves, our portfolio is first class. We offer a range and quality of Cloud Services that can cater for all our customers’ business goals and aspirations. It’s our job to find the perfect solution for your requirements and you’ll benefit from the research and development carried out by our team to find the ideal system solutions for you.



Partners are vital to the ongoing success of our company so we nurture our award-winning network of like-minded organisations, building up mutual trust and respect in our working practices that can only benefit our customers.



It has always been of key importance to CIS to achieve high levels of productivity and to ensure that we remain s highly effective, lean and fast-moving organisation. It allows us to keep ahead of the game and to spot and act upon new products and trends whenever possible. By keeping on our toes, we can pass on benefits to our clients and partners without the need for time consuming learning curves.