Washers had poor pressure the other week so after adding water, they seemed fine, thought no more until today, poor or no pressure, messed about for a bit with no joy, then suddenly all was fine, until I shut the bonnet, bugger, well it no seems the where the hose turns at right angles coming through the bulkhead wasnae swivelling and cutting the flow, much silicone spray later seems all good now, fingers crossed.

 

its probably the washer motor which sits behind the drivers side wing.
There are two motors so try the headlight washers, to see how they perform.

 

There should be a clip on the drivers side bonnets hinge for the hose, this stops it getting pinched when you close the bonnet

 

It pays to take the washer nozzles off and flush them out from time to time.