Andrew Crawford (uncredited) played the coachman who talked to Ashenden about Scotland as he drove the latter from the railway-station to the sanatorium at the beginning of the last part of the picture.
The two shorter components of 'Trio' were remade as episodes of the iconic UK television series 'Tales of the Unexpected'. 'The Verger' starred Richard Briers and 'Mr Know-All' had Topol in the title role. Both episodes were first shown in 1988.
The first book Ashenden is depicted as reading is "Nicholas Nickleby" by Charles Dickens (1812-1870) first published in book format in 1839. The second book is "Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London from 1800 to 1830 inclusive", Volume 1: 1800 to 1814. The third book is "Vivian Grey" by Benjamin Disraeli (1804-1881). The fourth book is on meteorology with the pages open to a chapter on measuring temperature.
Second of three film anthologies of W. Somerset Maugham's stories - the first being Quartet (1948) and the last being Encore (1951).
Last film released under the name of Gainsborough Pictures.