[1] He gained a degree in Modern History from Oxford University and spent three years as a lecturer, before becoming a full-time writer.
The Action Scene series included five books, from Skydive to Frontier;[6] as Miles, he also wrote Not for Glory, Not for Gold, a novel about athletics.
[10] The series features a fictional theatrical company, Westfield's Men, and, in particular, Nicholas Bracewell, its book-holder, a position similar to that of the modern stage manager.
In the "Captain Rawson" series, Marston has written about a soldier and spy operating during the military campaigns of the Duke of Marlborough.
In recent years, he began the "Home Front Detective Series", set in London during the First World War; seven had been published as of 2019.
It concerns two Scotland Yard detectives, Inspector Robert Colbeck and Sergeant Victor Leeming, whose cases are invariably linked to the railways.
As Allen, he wrote about the private detectives George Porter Dillman and Genevieve Masefield, who operated aboard ocean liners of the early 20th century.