Historical re-enactment is a hobby which involves recreating aspects of history at events open to the public. The two main types are military battles and Living History displays where re-enactors in costume demonstrate crafts of the time. Some events share both elements and there are also 'multi-period' ones where Viking re-enactors will be rubbing shoulders with Civil War Roundheads or WW2 fighter pilots. It's a thriving scene with over 18,000 re-enactors, and dozens of events throughout the UK. People of all ages and walks of life become re-enactors – but what draws them to it and what does it involve?