Place of Origin:
Invasion of the Bane
Lesley was the PA and secretary to Mrs Wormwood at the Bubble Shock! factory.
On Wormwood’s orders, 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. (Invasion of the Bane)