The 47-year-old actress made her professional acting debut in the six-part sci-fi children's serial - which was the first drama to be penned by Russell T Davies and followed three teenagers fighting to save Bishop Grave School from an evil teacher - in 1991 and has now teamed up with the 'Doctor Who' showrunner to play the part of Reet once more as part of an audio drama titled 'Dark Season: Legacy Rising' and is ""delighted"" to be going back to the beginnings of her career