He retired in 1967 and a year later Sir Herbert Butterfield retired as Master of Peterhouse College. Burkill was appointed to succeed Butterfield as Master and he served from 1968 until 1973:
Siya ay nagretiro sa 1,967 at isang taon mamaya Sir Herbert Butterfield nagretiro bilang Master ng Peterhouse College. Burkill ay hihirangin upang magtagumpay Butterfield bilang Master at siya nagsilbi mula 1968 hanggang 1973: