Peter Wright in 1963 following what Wright refers to as a tip-off by "a fifth man, still inside", he became convinced that the KGB had penetrated the higher reaches of MI5. As claimed in "Spycatcher", Wright had come to believe that Roger Hollis was the highest traitor in MI5. Wright went so far as to begin to make, as he himself put it, "his own 'freelance' inquiries into Hollis' background" shortly before the latter's retirement. According to Wright, his initial, unspecified, suspicion was aroused by his analysis of how a Soviet 'illegal' Lonsdale's arrest in January 1961 was handled by the KGB
Susanna Wright in Moore's commonplace book, a compilation of poetry and prose that was published in 1997 under the title "Milcah Martha Moore's Book". One of the poems is written to Mary Norris Dickinson. Wright is one the three dominant female contributors to Moore's commonplace book, along with Griffitts and Fergusson. Contrary to the then-usual practice, Wright did not write under a pseudonym; in Moore's book her poems are attributed either to 'S. Wright' or to 'S.W.' It is uncertain how many poems Wright produced in total, but it is likely that many are now lost. An early 19th century reminiscence of