Alterations to internal layout of units 1 and 2 in farmhouse conversion (Application under Section 19 to vary condition no. 2 (approved plans) of planning permission no. 18/03188/LBC (Conversion of a grade II listed farmhouse into 2 dwellings, conversion of associated barn to form 4 dwellings, conversion of existing cart shed into 1 dwelling, demolition of existing farm outbuildings and associated access and landscaping))