English Civil War Society - http://english-civil-war-society.org.uk/www/cms/index.php

The main aim of this Society is to stimulate interest in the authentic re-creation of seventeenth century military life and in so doing we endeavour to entertain and instruct our own members and the visitors to our events. We do this by continually striving for historical authenticity in our clothing, artifacts, methods, weapons and tactics.

The Sealed Knot - http://www.thesealedknot.org.uk/index.asp?Page=sealed.htm

The Sealed Knot, a registered charity, stages numerous events throughout the country, offering you the unique chance to experience at first hand the trials of a nation at war with itself. Sealed Knot battle re-enactments are colourful, exciting and above all realistic - the roar of the cannon, cavalry dashing across the field, thousands of soldiers clashing in battle, the colourful standards, the smoke and the noise of the drums - this is the Sealed Knot - vividly bringing to life the battles that helped shape our nation.

The Battlefield Trust - http://www.battlefieldstrust.com/

The Trust aims to:

• provide a range of battlefield-related activities and information, including the quarterly journal 'Battlefield', battlefield walks and conferences
• liase with local and national organisations to preserve battlefields for posterity
• save battlefields from destruction by motorways, housing developments etc.

 The Cromwell Association -  http://www.olivercromwell.org/index.htm

The Cromwell Association was founded in 1935 to commemorate Oliver Cromwell (1599-1658) and to stimulate interest in Cromwell and the general history of the British Isles and dependent territories from his birth to the time of the Restoration. In addition, we aim to encourage the study of Cromwell and the wider history of the period, which includes the Civil War, the Commonwealth and the Protectorate.