Mr. Trent died of a chest ailment in 1857; his daughter Elizabeth married Sir Percival Harlow in 1858, and had four children by him. Mr. Trent's wife behaved scandalously following her husband's demise; she died of pneumonia in 1884, having enjoyed, she said, "more lovers than this Bernhardt woman."
Henry Fowler died of "unknown causes" in 1858.
The South Eastern Railway, tired of the inadequate arrangements of London Bridge Station, built two new terminals for its line: the famous vaulted arch of Cannon Street in 1862, and Blackfriars Station soon after.
Pierce, Barlow, and the mysterious Miss Miriam were never heard from again. In 1862, it was reported that they were living in Paris. In 1868, they were said to be residing in "splendid circumstances" in New York. Neither report has ever been confirmed.
The money from The Great Train Robbery was never recovered.