I failed a module exam (foundations of psychology). Do I need to pay for a resit? And if I fail the resit, do I have to resit the entire year?
Greenwich's Academic Regulations, here, are not terribly clear, unfortunately.
It seems that the Progression and Award Board can decide that you need to resit "all or some elements of assessment" or that you need to retake the module. (See D8.4 and D8.8) If a retake is required, then that can happen in the following year alongside that year's modules. (See D8.12)
I can find no evidence that there is a cost involved. That does not mean that there isn't one.