To Kill A King (2004)

England, 1645: After waging three years of bloody civil war, victiry is in hands of the Puritans who have overthown King Charles I and won their battle against corruption. Two heroes have emerged from the war - the leaders of the New Model Army, Lord General Thomas Fairfax and his loyal deputy General Oliver Cromwell. The war may be won, but their mission is to unite and reform the country. Their bond of friendship may be strong, but what lies ahead of them proves to be the true test. As a member of the aristocracy, Fairfax desires moderate reform of the monarchy, but Cromwell has other ideas… Returning from the war, Fairfax enjoys a passionate reunion with his beloved wife, Lady Anne. However, Anne retains a commitment to the monarchy and believes, along with many in Parliament, that the war has served as a satisfactory lesson to King Charles I. Under the leadership of Speaker of the House, a faction of Parliament secretly agree to return the King to power in exchange for valuable gifts and the promise of favour. Cromwell is outraged: he employs his troops to recover the treasures used for bribery and puts the traitorous MPs on trial. Fairfax learns that Cromwell has no intention of conducting a fair trial and that he has signed the King's death warrant in advance. As the King's execution proceeds, Fairfax and Anne flee London. Once in the company of Royalist acquaintances Fairfax realises he still believes in the principles he fought for, and he must return to London and try to temper Cromwell's extremism. But with the King dead, Cromwell's puritanical regime spirals out of control. His armies spread violence and fear througout the country, with frequent raids on the theatres, gambling dens and public houses. Cromwell is behaving more like an Emperor every day, and tension between the two old friends builds to a point where Fairfax realises Cromwell must be stopped. Fairfax engages a soldier colleague to shoot Cromwell during one of his increasingly royal appearances at Greenwich Palace…