IT for Industry Company Index - X
- X-G L Systems Ltd. - Waltham Cross
- X:Drive Computing Ltd. - Canterbury
- xDox eBusiness Consulting - Reading
- Xenon Network Services Ltd. - Altrincham
- Xfurth Ltd - Luton
- Xicon - Warrington
- Xirtek Ltd. - Chippenham
- XKS Ltd - St Asaph
- Xl Systems Ltd. - Warlingham
- XM Services Ltd - Dundee
- Xma Ltd. - Nottingham
- Xperience Support Ltd. - Lisburn
- Xyone Ltd. - Chorley
- Xyratex Technology Ltd. - Havant