| Article | Date | Issue | |
|---|---|---|---|
| Tip Bit | 07.02.2010 | 939 | see article |
| Tip Bit | 03.01.2010 | 934 | see article |
| Tip Bit | 23.08.2009 | 916 | see article |
| Tip Bits | 23.08.2008 | 865 | see article |
| Tip Bits | 25.05.2008 | 852 | see article |
| Investment Extra: Ian Lyall says buy PV Crystalox, 166p, on any weakness as it looks a sound investment with further to go, although set a stop-loss of 125p. | 18.05.2008 | 851 | see article |
| Tip Bits | 13.01.2008 | 833 | see article |
| Tip Bits | 09.12.2007 | 830 | see article |