A. Dunlop
From Tardis Wiki, the free Doctor Who reference
Mr A. Dunlop was a teacher at Coal Hill School. He interrupted Clara Oswald's English lesson to inform her she had a phone call from UNIT. He took over for Clara as she left the school to deal with Missy. (TV: The Magician's Apprentice)
He was on Coal Hill School list of the dead. (TV: For Tonight We Might Die)