Thanks all for the suggestions. I have had another thought and wondered if anyone had tried pannier liner bags?
I found this -
https://www.bags2cover.co.uk/product/pannier-inner-liner-bag/Prices from £39.99 - a bit more palatable that some of the suggestions above. Has anyone tried these?
If I decide to go in this direction, I will have to wait until the car arrives and measure up myself.
