Erection of a single storey extension to the side of the main building; and erection of a single storey rear extension to the side and rear of the existing back addition, following demolition of existing infill extension (as approved under application 2019/03517/FUL). Erection of a part single part two storey rear extension at first and second floor level (further 0.55m higher, beyond the extension approved under 2019/03576/FUL), on top of the back addition, following demolition of the existing conservatory; installation of new windows to replace the existing windows at first and second floor level to the side elevation of the main building; replacement of the existing windows with doors and Juliet balconies at first and second floor levels to the rear elevation of the main building; installation of 5 rooflights on top of main roof (amended development description).