Lesley (Invasion of the Bane)

Lesley was the PA and secretary to Mrs. Wormwood at the Bubble Shock! factory.

Biography
Lesley tried to kill Sarah Jane Smith in a lift. She was unsuccessful, and Sarah Jane subsequently escaped. Injured, Lesley went back to Mrs Wormwood and told her that Sarah Jane escaped. Even though Lesley is not seen again it is assumed that she continues as Wormwood's PA. (TV: Invasion of the Bane)