The invention relates to an apparatus and method for recording transmitted data items, and particularly television and radio programs. The data items are received at one or more inputs along with ID data identifying the transmitted data items and the program series to which the data item belongs. An input interface receives input indicating whether one or more received transmitted data items have been viewed or recorded by a user and a processor generates values for ranking the series to which each of the received data items belong based upon the received input. Subsequently received transmitted data items are stored in a storage device based on the generated values, the stored data items belonging to a series for which a value has been generated.