However , the defeat of the French and Spanish navies at the Battle of Trafalgar ( 1805 ) ended any thoughts of an invasion of Great Britain .
By 1806 , Napoleon was master of continental Europe effectively locking Great Britain out of the continent .
The defeat of the French and Spanish navies at the Battle of Trafalgar ( 1805 ) ended any thoughts of an invasion of Great Britain .
By 1806 , Napoleon was master of continental Europe effectively locking Great Britain out of the continent .