Thanks for the tip on the Silestone. Got in contact with our BC and she explained it all. Will pick our new stone over the next day or so. BC has had a large backlog of people to call and so is doing it in order of those who need to know ASAP - I get it. We have a good BC so no problems at my end regarding the new stone.
The house build, well that's another story :/
With the rain coming this week I'm expecting our plaster to get wet and therefore get replaced in the coming weeks due to not being weatherproof <sigh>. A never ending pile of problems.