For anyone interested The Prisoner is being shown all next week starting tomorrow (Monday) at 9pm on Freeview, True Entertainment, channel 61
Last saw it about thirty years ago.
http://www.tvguide.co.uk/m-detail/145882/125921648/the-prisoner
It was ambiguous as to whether it was or not. His character in Danger Man was called John Drake. In The Prisoner he doesn't have a name, just a number, Number 6.
Certainly explored similar theme of individual freedom. This 50th anniversary is when they first started shooting the series. The 50th anniversary of the first broadcast is September 2017. I was too young to catch it the first time round but saw it when it was repeated on Channel 4 in 1983...