Services for businesses
Its work covers digital strategy and consulting, cloud and infrastructure, cyber security, data and AI, application development and managed IT support.
Check this on C5 Alliance’s website ↗ (opens in a new tab)Jersey Web Directory · IT services
C5 Alliance
La Route de la Libération · St Helier
C5 Alliance provides technology, cyber security and business advisory services to organisations in the Crown Dependencies. Its Jersey office is at Windward House on La Route de la Libération in St Helier.
Independent listing, checked against C5 Alliance’s website on 2 October 2026. Not yet confirmed by the business.
At a glance
Technology and advisory firm in St Helier
Microsoft products and support
It deploys and supports Microsoft business applications, security and productivity tools, and runs a separate helpdesk email for technical support.
Check this on C5 Alliance’s website ↗ (opens in a new tab)Offices across the islands
Alongside Jersey, the firm has offices in St Peter Port, Guernsey, and in Douglas on the Isle of Man.
Check this on C5 Alliance’s website ↗ (opens in a new tab)Go to the source
Useful links before you visit
About this listing
Checked against public sources
We checked the address and business details against C5 Alliance’s own website (opens in a new tab) on 2 October 2026. The location pin comes from OpenStreetMap (opens in a new tab). Menus, hours and availability can change, so the links above take you straight to the business for the latest information.
Jersey Web wrote this independent listing. It has not been confirmed by C5 Alliance, and it is not a review, recommendation or claim that C5 Alliance is a Jersey Web client.
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