Temu (similar to Ali Express) offer model specific dash covers for various cars, most seem to be between £15 and £20 with free delivery.

Quite tempted for one for the ageing Landcruiser, the dashes of which are prone to cracking after many years, £17 free del.

Dash covers are fairly.common in Australia too. As much to stop the dash from cracking as to prevent reflections.

If it causes you £80 worth of bother, you can buy them for UK models here. I have bought floor mats from this company before, so can vouch that they do exist..

luxuscarmats.com/collections/luxus-dash-covers

Also in Taiwan.

Made of some kind of carpeting, and seem to be usually a sort of Afghanistan Countryside Khaki Colour, though I dunno if they are sold like that or thats the colour they adopt in service.

Didn't want carpet in my car (ridiculous stuff, though better on the dash than underfoot) and certainly wasnt going to buy it, so I made something from a bit of lay-flat HDPE irrigation hose.

This didn't initially live up to its name, but after a few days in the sun it conformed to the dash-top nicely.