Natalie Redfern

Natalie Redfern was a researcher at Planet 3 Broadcasting. She occasionally helped Sarah Jane Smith during her investigations. It may be Natalie who discovered the Xylock centre that made up Mr Smith and it is unknown how, or if, she and Sarah Jane parted ways and it is unknown if Natalie attended Sarah Jane's wedding to Peter Dalton.

She was played by actress Sadie Miller, daughter of Sarah Jane Smith actress Elizabeth Salden.