Aerospace Company Index - Y
- Y D T Medical - Purley
- Yateley Ceramic Studio - Yateley
- Yebo Connections - Luton
- Yelo Ltd - Carrickfergus
- Yield (Uk) Ltd - Widnes
- Yokogawa Measurement Technologies Ltd - Runcorn
- York Elevator Services Ltd - York
- Yorkshire Glass - Wakefield
- Yorkshire Mobility Systems Ltd - Bradford