Extract from an email recieved today:
Membership No: 2010****Well, IChemE, I think that having taken the effort to find my membership number, my PIN and my name, you could work out whether I'm a member or a subscriber. For your information, I'm a member.
Pin No: ****
Dear Miss Rigg
As a member of IChemE, or a subscriber, tce is your magazine and we want to know what you think of it.