Not exactly operating at a Ken Burns level here, this documentary is nonetheless highly informative (it seems like a British High Schooler movie that made it to DVD), and quite accurate, though I found the 100 years in the future soundtrack of J.S. Bach somewhat distracting (Monteverdi would be more appropos), but this is a minor quibble.
The movie has one format: a rather monotone narrator voices over civil war re-enactors, interspersed with the occasional image from the era. It works, but makes it a bit dry. The re-enactors looked like they were having a fine time, as they always seem to in British documentaries. I'd agree with the other reviewer that the American Creative anachronism folks could take a clue from these sorts of documentaries, and expand to early modern or Roman era gear.
Bottom line - if you want a comprehensive overview of this fascinating period, take a look. If you have time for only one DVD on this period, then by all means watch Cromwell starring the Richard Harris.
