An object processing machine for processing a plurality of objects, the machine comprising: a plurality of processing modules, each processing module having a modular structure co-operable with the modular structure of another processing module to form a modular assembly constituting the object processing machine; each processing module being operable to perform a corresponding processing operation on an object and being provided with at least one transfer unit located at a respective port of the processing module; each transfer unit being arranged to transfer an object to or from the corresponding processing module and/or to or from a transfer unit of another processing module of the modular assembly; the transfer units being arranged to co-operate with one another and/or with another processing unit such that objects can be guided from an input of the machine to an output of the machine via a plurality of different transport pathways through the machine, wherein the transport pathway taken by a said object being processed corresponds to the pre-determined processing operations to be performed on the said object. A method of processing a plurality of objects using such a machine is also described.