Citadel is part of a group of companies specialising in IT Services which combine together to make The Pure Synergy Group. We are stronger together and can offer a wide range of skills including hosting, finance apps, customer relationship management (CRM), enterprise resource planning (ERP) and reporting services.

The Pure Synergy Group consists of:

Pure Synergy


The Pure Synergy Group – business that works for business. The combined specialist IT knowledge of the businesses within The Pure Synergy Group provides the full package to SMEs, making sure they get the most out of their IT investments.

Citadel Technology

Here at Citadel Technology, we offer a range of IT services revolved around our innovative cloud platform. We’re a leading provider of hosted desktops – you can work from anywhere if you have a device with an internet connection. Our team consists of dedicated IT professionals who are always on-hand to offer 24/7 support services.

Some of our solutions include data centres, cloud hosting, IT support, controlling costs, managed IT services and hosted applications. Cyber security is of the upmost importance to us, meaning you can use our services without the worry of being subjected to a cyber-attack.

We focus on your IT, so you don’t have to.

Synergy Technology


Synergy Technology provides top-quality business application systems along with comprehensive support services.

The key services offered by Synergy include system consultancy, system integration, support services and managed flexible hosting services.

Synergy’s team has an understanding of how SMEs need business applications to perform and can provide IT solutions to meet specific needs.

Caltech CRM


Caltech is a CRM specialist with more than 20 years’ experience. Customer Relationship Management is crucial to every organisation; the point of CRM is to make sure customers have positive experiences, leading to a good relationship with the business. Implementing CRM correctly leads to an organisation having a large amount of returning customers.

Caltech’s consultants can help your organisation with Microsoft Dynamics 365 Business Central CRM implementation using a tried-and-trusted approach. Caltech’s aim is to do its upmost to deliver the best CRM solution to its customers.

Interested in a hosted desktop solution for your business? Contact us today and we can discuss a solution catered to all your requirements.