This client required a bedroom and en-suite but did not want to alter the roof shape vastly. Something we generally agree with if the space allows with out dormers etc.
A free survey revealed that the roof height was quite good so the main section of the room could work just using Velux roof windows. However, the staircase would need a pitched roof dormer on the side elevation. This would allow the new staircase to continue above the existing flight and also allow an en-suite to fit.
The final result created a lovely bedroom with useful shower room.