Sheila Clark

Sheila Clark was an employee in the department store Sanderson & Grainger. She mysteriously disappeared on a Tuesday night while investigating the a strange noise in the dressing rooms. She was in fact taken by the Cybermen and converted. She was destroyed when Craig Owens foiled the Cybermen's attempt to convert him into a Cyber-Controller and overloaded their emotional inhibitors with "love". (DW: Closing Time)

She presumably worked at Sanderson & Grainger.