Episode 300 is The Secret Service (1969)

"A Case For The BIshop"

Father Unwin and Matthew are put onto the case when the Ambassador of Dreisenberg attempts to smuggle a stolen mini-computer out of the country.

This is Gerry Anderson's last Supermarionation

Plus some extras our top TV tunes of 60's, 70's, 80's, 90's, 00's and 10's