He is now an award-winning producer of audiobooks and has also edited and written several books, including biographies of Kenneth Horne and of his father, Brian Johnston.

In 1969 he joined the vocal group Design who went on to appear on more than fifty television shows in the UK in the early 1970s with stars such as Morecambe & Wise, The Two Ronnies, Tommy Cooper and Benny Hill.

After graduating, he presented the breakfast show (as Barry Alexander) on Radio KLOA-AM in Ridgecrest, California for two years.

[5] In 1992 Johnston formed BarryMour Productions with Chris Seymour and a year later they produced a recording of his father's one-man theatre show An Evening with Johnners.

[11] In 2003 Johnston and Seymour produced the audio CD The Wit of Cricket (Hodder Headline) featuring Dickie Bird, Henry Blofeld and Brian Johnston, which became the number one bestselling audiobook in the UK in 2007[12] and 2008[13] and received a Silver disc award for sales of more than 60,000.