A few weeks ago I visited the nearby Black Country Living Museum (BCLM) specifically to see two WWI re-enactment societies (The Warwicks 1914-1918 and the The Great War Society) that attended giving displays, demos etc. My dad used to work at the museum so as a family we used to have free access to the site but I decided to pay the cash for a ticket as it is then valid for a whole year.
I've deliberately altered the photos, obviously removing the colour but I've also softened the images to try and evoke period photographs. In a style reminiscent of Stalin's photograph altering censorship I have also (very crudely) removed all the other non-costumed visitors from the photographs via the magic of computer software.
All the members I spoke to are all very knowledgeable, definitely worth seeing if them are appearing or attending at a event near you.
The BCLM itself provided a very atmospheric setting for the groups. The buildings at the museum have all been taken down brick by brick (literally) from the local area and then been rebuilt on this site.