All appears to be OK with the pump for now.
Popped into SCB in Edinburgh today (I was dropping a pal off at the airport) and picked up a used water pump for the princely sum of £2.
They had two or three Jazz's in for breaking and on two of them, the water bottles were already exposed.
That spare will be put into the tool box, until needed.
Next job will be fitting new discs and pads at the weekend.... Fingers crossed for dry weather, should be here tomorrow afternoon.
GF ordered a full set of front and rears for £62 delivered on eBay.