Forester was Donald Bruce's deputy for the area of the Kanowa research center.
In 2018, when Bruce was finally convinced of Salamander's motives, he and the Second Doctor (posing as Salamander) entered the research center, and met with the Doctor's companions Jamie McCrimmon and Victoria Waterfield.
When the Doctor released Jamie and Victoria, Bruce asked them to get to a public phone, dial double zero one, ask for a man named Forester, tell him where Bruce was and say red head, their emergency call.
When Benik attempted to kill Bruce, Forester arrived and arrested Benik. (TV: The Enemy of the World)
Behind the scenes
Froester in given a larger role and some lines in the novelisation.