Lieutenant Algernon Thomas Alfred Ffinch was the commanding officer of the Redcoat patrol that arrested the Second Doctor, Ben Jackson, Jamie McCrimmon and Colin McLaren in the aftermath of the Battle of Culloden on 16 April 1746. At first, he planned to hang them, but was persuaded by Solicitor Grey to hand them over to him.

After taking him prisoner, Polly Wright and Kirsty McLaren forced him to help rescue their friends. Later, Ffinch arrested Grey for illegal slave trading. As he said goodbye to Polly, he hinted that the reason he had helped them was because he was attracted to her. (TV: The Highlanders)

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