Guy Mankowski is an English writer. He is the great grandson of the author and broadcaster Harry Mortimer Batten. He was educated at St John's College, Portsmouth and Ampleforth College. He read Applied Psychology at Durham University and gained a Masters in Psychology at Newcastle University. He then trained as a psychologist at The Royal Hospital in London. Mankowski was the lead singer of the band Alba Nova.

St John's College was a private day and boarding school located in Southsea, Hampshire, England. It was founded by the De La Salle brothers in 1908. In May 2022, the Governors announced that the school would not re-open for the academic year starting that September, citing declining student numbers, under-investment and the impact of the COVID-19 pandemic as the causes. In August 2022, St John's College appointed administrators and went into liquidation. The head of the college at the time of closure was Mary Maguire.