It might just be a UK thing bro, but they are clinics set up to give advice to smack heads (heroin adicts) and flow them fresh needles, syringes and swab for free. They also dont mind helping out BBers. I went to one and they chucked 50 needles, a box of syringes and a load of swabs in a bag, gave me a little book about gear and how to use it and sent me on my merry way!
They were really cool, no lectures or disaproving looks just smiles and free needles.