James VI and I was a major advocate of a single parliament for England and Scotland.
 In November 1621, roused by Edward Coke, they framed a petition asking not only for war with Spain but also for Prince Charles to marry a Protestant, and for enforcement of the anti-Catholic laws
 He achieved most of his aims in Scotland but faced great difficulties in England, including the Gunpowder Plot in 1605 and repeated conflicts with the English Parliament

