I've recently been facebooked by an old school friend who knows that I'm a pharmacist. She was asking if I could help out her father who owns a clock repair shop.
He needs silver salts and cyanide (not sure which salts) maybe twice a year as part of his business. His usual pharmacist has retired and he can't find a new pharmacist willing to supply. I have never had to supply poisons outside of a dispensing exam at uni! Anyone in NE Essex who is happy to supply? I could send some business your way. Please PM me if you could help (and if there is any more info you need).
A horological supplies agent should be able to help. google is your friend. We used to sell cyanide for killing moles. Unfortunately, terrorist worries likely to make things very difficult. liquor hydrocyan dil was a standard galenical in my day. Used in stomach mixtures. A caustic stick for warts contained silver nitrate.
johnep
Only allowed to sell Cyanide, if I remember rightly, for use to destroy wasps' nests, and only then to official wasp killers, and I would check anyway before I did