Kingham usually has a handful of empty spaces most days, right up at the north end but short of buying a field or buying back the area where that industrial unit has been built at the north end, hard to see any scope for expansion.
The 'spare capacity' at Moreton is not guaranteed, should the county council get round to imposing limited waiting times on the parts of the town centre it is responsible for. The town council has already imposed a four-hour limit on its spaces, in large part due to rail passengers, along with people working in the town, blocking free spaces all day. If the county follows suit, then the spaces at the station will be taken again. Until Thames imposed charges in 2002 or 2003 (promising us never-delivered
CCTV▸ and better lighting in return), the station parking was near-full much of the time. While the former sidings area behind the island platform could be an option to add spaces if needed, access issues via the Blenheim Farm housing estate might be a problem, though there is a vehicle gate into the railway land at that side which was fitted when the new footpath was installed during building of the houses - not that you could get a vehicle in at the moment, due to the rampant bushes and trees. This pic
http://www.hondawanderer.com/L419_Moreton-in-Marsh_1985.htm shows just how much land Network Rail does own, out to the hedge on the right, though most of it is now overgrown. The footpath/vehicle access is along the end of those business units and past the storage tank in what is a field in the photo.
At Pershore negotiations are still in hand about a land swap with the joinery's owners, Network Rail and Wychavon council all involved. It is hoped some deal will emerge shortly, rearranging ownership of the land in a more logical way, tidying up the whole area and providing a good number of extra parking spaces.