Around 11 months ago, we started from a stripped site, the treatment plant was in and running the cabins / static so drainage just required connecting up. we had to wait for the warrant to be amended (change to the certificate of deign) this held us back ma month or so until the BCO just said "get on with it, we can sort that later"- top guy!!
If we had waited for the amended certificate of design we would still be building, it took him 5 months to get it to us.
I've document