Mary Poppins may be nearing 70, but she's still a highly sought after super-nanny, and it is only now, 40 years after she made her screen debut that she has finally been enticed onto the stage, with Thomas Schumacher, producer for Disney Theatrical Productions, and Cameron Mackintosh teaming up with Richard Eyre and Matthew Bourne to bring you one of the most sought-after musicals ever.