"The Four Just Men" was a 1959 Sapphire Films production
for ITC Entertainment. It ran for one season of 39 half-hour
black & white episodes.
The series features four men who first met whilst fighting
in Italy during World War II. The men later reassemble and decide
to fight for justice and against tyranny, using money set aside
for the purpose by their late commanding officer.
The series is unusual in that the four lead actors appear
in turn, rather than together, and are never seen together other
than in the first episode.
The series was loosely based on a novel by Edgar Wallace.
For a list of episodes, guests (of which Alan was one), and
other interesting tidbits, visit the "Four Just Men"