I’ve just bought some beautiful octagonal marble floor tiles on ebay. They’re from Fired Earth so they are really high quality (and very thick) and would normally be well out of our budget. They are left overs from somebody else’s renovation and brand new even though I can’t see them still on the Fired Earth website so I can’t be tempted to buy more to match them.
They are close by so can be collected by car without spending too much time/petrol.
I don’t think there will be enough for the bathroom, but they should be great for the utility room.