John Brock is a fictional British undercover agent created by Desmond Skirrow

Desmond Skirrow

Desmond Skirrow was a British advertising executive and writer of thrillers.-Career:In the late 1960s he wrote three outstanding spy novels about a fictional British agent named John Brock. Like his creator, Brock works in advertising in London, but is also a part-time agent for an undercover...

. He appeared in three fast-paced, witty, and irreverent spy

SPY

SPY is a three-letter acronym that may refer to:* SPY , ticker symbol for Standard & Poor's Depositary Receipts* SPY , a satirical monthly, trademarked all-caps* SPY , airport code for San Pédro, Côte d'Ivoire...

 novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

s written in the late 1960s. Like his creator, he is an advertising executive in London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

but he is also a part-time agent for a secret department run by The Fat Man. He is tough, witty, and supremely competent.