X
- X D P Ltd., SUTTON COLDFIELD, United Kingdom
- X K Engineering Ltd., COVENTRY, United Kingdom
- X K O Dormant One Ltd., CHERTSEY, United Kingdom
- X K O Network Systems Ltd., LUTTERWORTH, United Kingdom
- X L Recordings Ltd., LONDON, United Kingdom
- X L Timbalex Ltd., DIDCOT, United Kingdom
- X M A Ltd., NOTTINGHAM, United Kingdom
- X P Plc, READING, United Kingdom
- X R O Ltd., UXBRIDGE, United Kingdom
- X R T-Cerg UK Ltd., RICHMOND, United Kingdom
- X S Home Entertainment Ltd., REDHILL, United Kingdom
- X T Holdings Ltd., BRISTOL, United Kingdom
- X W V Ltd., WOLVERHAMPTON, United Kingdom
- X Y Z Machine Tools Ltd., TIVERTON, United Kingdom
- X Y Z Systems & Service Ltd., TIVERTON, United Kingdom
- X-Cel Communications Ltd., CAMBERLEY, United Kingdom
- X-I T 18 Processing Ltd., OLDHAM, United Kingdom
- X-Sword I Ltd., LEIGH-ON-SEA, United Kingdom
- X-Tant Ltd., REDDITCH, United Kingdom
- X-Tension Group Ltd., BRIGHTON, United Kingdom
