This thesis was undertaken in the belief that there was scope for a new examination of the complex, but fascinating interweaving of developments in France and Great Britain which led to their last violent confrontation of the eighteenth century. The six-month period which followed the overthrow of Louis XVI in the revolution of August 10,1792, was a time of sudden, bewildering changes of fortune for France and for its immediate neighbours. Britain, though physically unscathedo was exposed to the influence and reality, of, the Revolution in a way totally unforeseen in the complacency of Pitt's address to Parliament at the beginning of 1792.