This photo was taken in 1983 on the Bakerloo line in London. It was taken by Karen Collett on a family daytrip to London. She took the photo of her young nephew, sitting in the tube train as a memento of the day out so she wasn't expecting the photo to contain the gruesome image that appears to be outside the tube carriage window.
Strangely, the man in the electric chair looks very much like the wax model of Bruno Hauptmann (pictured below left, police photo of Hauptmann below right), one of the convicted kidnappers and killer in the Charles Lindberg's infant son. This wax model was on display at Madame Tussauds at the time this photo was taken and another odd note to add, is that the Bakerloo line runs under Madame Tussauds.
Karen Collet and her family had not visited Madame Tussauds on that day so it's highly unlikely that the image got mashed up with any photos taken that they may have taken if they had visited. Interestingly, the blue electric streaks seen on the photograph were not part of the wax museums display of the killer, depicting his execution in an electric chair.
The photograph has not been tampered with. One explanation is that this was an advertising poster but Madame Tussauds and the London Underground do not have any record of this image being used for advertising purposes.
