1. A method of managing print services comprising the steps of: determining which of a plurality of printers are intrinsically capable of performing a requested print job by a requested deadline, determining whether sufficient scheduling space is available on at least one of the aforesaid intrinsically capable printers to perform the requested job by the deadline, and in the event sufficient scheduling space is not available: (a) retrieving data relating at least one candidate print job scheduled for commencement on one of the intrinsically capable printers prior to the deadline; (b) allocating a value for each candidate print job in respect of which data is retrieved; and (c) in the event a candidate print job has a lower value than the requested job, cancelling the lower value candidate job and scheduling the requested job for completion by the deadline.