Cant help directly Trotter but I,m fairly certian that if you can find the number of the tackle shop in Manton Worksop in Nottinghamshire (owner Greg Forrester) you may just be able to purchase a few-- sure I saw some in the display cabinet when I went in last week.
Good guy Greg-- if he does have any I,m sure he would help by posting them if you,re a long way away!