Abstract: A pneumatic cash transfer system for use in banks and building societies to link a cashier station (1) to a remote teller assist unit (3) and a cash deposit box (4) in a separate secure area (5) comprises an air tube (6) extending between a tube terminal (7) at the cashier station and a tube terminal (8) in the secure area (5), and a cash carrying canister (10) movable pneumatically in the tube (6) between the two terminals (7, 8). The canister (10) is open at its side to permit insertion and removal of bank notes, and comprises a bank note holder (22) formed by a pair of spring-biassed clamping plates (23, 24) for holding bank notes firmly in the canister during travel in the tube (6). At the terminal (8) in the secure area (5) the holder (22) can be opened automatically to release notes to be deposited into the deposit box (4), and on closure of the holder it is ready to receive notes which are fed positively into the holder from the teller assist unit (3) for transmission to the cashier.