Sir Francis Drake

Sir Francis Drake was another period adventure drama produced by ITC Entertainment. This was also broadcast in the US on NBC during the summer of '62.
http://en.wikipedia.org/wiki/Sir_Francis_Drake_%28TV_series%29
Even if you're not old enough to remember this one, viewers will see familiar faces from later days.
Below are Glenn Edwards and Michael Crawford who in the 70's would be reunited in Some Mothers Do 'ave 'em which starred Crawford and featured Edwards in a few episodes. Of course Crawford went on to become a mega-star on the West End and Broadway stages.

Another member of Drake's crew in one episode was Bob Grant who is best remembered for starring in (and writing many episodes) On The Buses.