as you can see its pretty similar. If the stays are steel, it should be pretty easy to shorten them yourself. Cut to length, flatten the end and drill.
Mine is an alloy one so shortening these stays is a no-go. It might be worth me checking to see if I can get some of the shorter stays from something like this. Thanks for the heads up.
I think I saw them on Velo vitality before, but i can't see them now. Here is their rack:
https://www.velovitality.co.uk/collections/pannier-racks/products/metro-porteur-steel-front-rack-black
as you can see its pretty similar. If the stays are steel, it should be pretty easy to shorten them yourself. Cut to length, flatten the end and drill.