B
Bill
Tell the builder that the wall needs sorting by the plasterer. If you have a straight edge, put it across the wall, under the window, and this will highlight the problem to the builder. Do not take no or can't do it for an answer.Yep, that's exactly the issue Tom.
The builder says the tiler should be able to even it out, and then he can pack out a wall cupboard (to the left of the sink) so it all looks square. I hope this works.