Guy Anson Maunsell was the civil engineer responsible for designing the sea forts that bear his name. He was born in 1884 in British India to a military father.

He was sent to school to the Eastbourne College in 1897 and later he studied civil engineering at the City and Guilds of London Institute.

During World War I he spent a year as an officer of the Royal Engineers on the western front.

He was involved in designing eight anti-submarine towers named M-N next to Dover Strait.

He is best known for his forts designed on the Thames estuary during World War II.

After the war he has founded his own company, G Maunsell & Partners which used prestressed concrete for many structures.

He died in 1961 at the age of 76.