When visiting any archive or special collection make sure you familiarise yourself with rules and regulations which may be different to what you may be used to. The rules are needed in order to protect the rare and often unique items. For example you may be required to store your bags in a locker, and only use pencils for making notes.
For example, to access the Cadbury Research Library you must register for a reader's ticket on your first visit. It is free to register but official identification showing your name, address and signature is needed. A valid University of Birmingham staff or student ID card can also be used as proof of identification.