Thank you for your reply and I am glad that you agree.
I've seen this fault fixed in this way on other Bovis homes and the owners have shared their experiences. I found the NHBC guidance last night and it states that the trench needs to be a minimum of 600mm away from the brick of lowering the ground. I have sent this to the Bovis reigonal manager I am dealing with and hopefully he will see that what he is proposing isn't suitable. However, his ignorance and arrogance never ceases to amaze me.
I'm awaiting a reply from Bovis today and the NHBC outcome probably won't be for a couple of weeks.
I'll keep this feed updated in case it helps other people.
When you talk about DPC being above FGL, can you explain this a bit more. I'd like to check on this and if there is a fault I would like to ask them to fix it.
Thanks