I've used Molecular Probes' UV alignment beads, they work fine.
Their European address is:
Molecular Probes Europe BV
PoortGebouw
Rijnsburgerweg 10
2333 AA Leiden, The Netherlands
Tel +31 71 233378 Fax +31 71 233419
Nigel Blackhall
Experimental Officer,
Plant Genetic Manipulation Group,
Department of Life Science,
University of Nottingham,
University Park, Nottingham, UK
Tel +44 115 9515151 ext 8501
Fax +44 115 9513240
E-mail Nigel.Blackhall@Nottingham.ac.uk