In later years , with Robert 's move to London , the brothers wrote many new songs for the stage musical presentations of `` Chitty Chitty Bang Bang '' and `` Mary Poppins '' , produced collaboratively by Disney and Cameron Mackintosh .
In later years , with Robert 's move to London , the brothers wrote many new songs for the stage musical presentations of `` Chitty Chitty Bang Bang '' and `` Mary Poppins '' , produced by Disney and Cameron Mackintosh .