Delia Derbyshire - Sculptress of Sound documentary 1/7

I really liked the Dr Who drama An Experiment With Space and Time a few nights ago, they had a lot of good lookalikes in it and there was a great scene of a 'Delia Derbyshire' lookalike tape spooling and running tape all over the studio wrapped around various objects.  The theme tune was so fundamental to the show it was a real shame that they didn't take a few moments to introduce Delia to the cast in the screenplay and therefore to the public at large.