[MargaretR]

Thank You Kate for taking the trouble to find that.

So it was in 1985 that an existing restaurant was given permission to extend into a house next door.

The plans clearly show that all internal walls (with the exception of a stairway on the far left and the kitchen outbuildings) were to be demolished, and that the support for the upper floor be one central column.

I can't see 'suggestions on beams' you referred to but most of the planning notes I found unreadable.

I am not a structural engineer but the wisdom in doing that is doubtful, especially in view of the age of the original buildings.