1. Institute of Aquaculture; University of Stirling; Stirling FK9 4LA
2. Research and Development Division; Clear Springs Trout Company; Buhl ID 83316 USA
3. Red House Farm; Llanvihangel Monmouth Gwent WP5 4HL
4. Skretting (UK); Wincham Northwich Cheshire CW9 6DF
5. Torhouse Mill; Wigtown Wigtownshire DG8 9DJ