ATPLs
At ATPL level I'm affraid the only things that you may bring in to the exam is your passport (always required for ID purposes), a calculator, plotting equipment (when required), CRP-5 (when required) and your Jeppesen student manual for the Flight Planning exam. The CAA supply all CAP's (for use in Mass & Balance, Performance and Flight Planning) and even give you a crappy pencil with a rubber on the end of it to use! Everything else will have to be stored upstairs in the old grey matter!