I have just posted the forms off to building control along with a cheque for £235.00.
I knew they would want to be involved in inspecting the new bathroom but it appears that they are also concerned with the plastering and they will insist (where practical) that we increase the "thermal properties" of the house. There is not that much extra that can be done when the house has been built with 9 inch walls without making the rooms smaller! They may insist that we use thermal plasterboard, where practical, and whilst that will increase costs slightly it is right that they force people to consider the environment.
They will also insist on the level of insulation in the loft and so on. We would have done this properly anyway but I think it is a good thing that somebody monitors this.