As London and the southern counties appeared safe, Warwick proclaimed Henry, and set out to encounter Edward without delay. He advanced towards Nottingham. Edward, who had taken up his headquarters at Doncaster, had issued his orders for all who could bear arms to join his banner. They came in slowly; and Edward, who had ridiculed the idea of the return of Warwick, saying Burgundy would take care that he did not cross the sea, was now rudely aroused from his fancied security. He was compelled with unequal forces to advance against Warwick. A great battle appeared imminent in the neighbourhood of Nottingham; but the rapid defection of Edward's adherents rendered that unnecessary. The speedy movements of Warwick, and the general demonstration in favour of Henry, had not permitted Clarence to carry into effect his intended transit from Warwick to Edward, when a startling act of desertion occurred to the king's side, which completed Edward's ruin. Before Edward could reach Nottingham, and while lying near the river Welland, in Lincolnshire, Montague, Warwick's brother, from whom Edward had taken the earldom of Northumberland, now revenged himself by suddenly marching from York at the head of 6,000 men, and in the night, and in full concert with his officers, advancing upon Edward's quarters, his men wearing the red rose instead of the white, and with loud cries of "God bless King Henry!"

Edward commanded his troops to be put in array to meet the traitor; but Lord Hastings told him that he had not a regiment that he could rely upon; that nothing was to be thought of but his personal safety, and that on the instant. Accordingly, he took horse with the Duke of Gloucester, the Earl Rivers, seven or eight other noblemen, and a small troop of the most reliable followers, with whom he rode away. A guard was posted on a neighbouring bridge to prevent the crossing of Warwick, for he also was within a day's march of him; and with all haste Edward and his little band rode at full speed till he reached Lynn, in Norfolk. It is probable that the royal party had made for this small port on the Wash, knowing that some vessels which had brought provisions for the troops still lay there. They found, indeed, a small English ship, and two Dutch vessels, on board of which they hurried, and put to sea. Edward, on starting from his quarters, had recommended his army to declare at once for Warwick, as the best means of saving themselves, and of again rejoining his standard when opportunity should offer.

The fugitives made sail for the coast of Holland, but no sooner had the king escaped from his enemies on land than he fell amongst fresh ones at sea. These were the Easterlings, or mariners of Ostend, who were now at war with both France and England. The Easterlings were at this time as terrible at sea as the pirates of Algiers were afterwards. They had committed great ravages on the English coast, while the nation was thus engaged in suicidal intestine warfare, and no sooner did they perceive this little fleet than they immediately gave chase. There were eight vessels to Edward's three, and to escape the unequal contest, he ran his vessels aground on the coast of Friesland, near Alkmaar. To ascertain how Vauclerc, the Governor of Calais, was disposed, in case Warwick resolved to attack the duke in his own territories, he sent an envoy to him to sound him. The envoy found all the garrison wearing the red rose. This discovery added to the alarm and chagrin of Burgundy, and, while he conceded to Edward a place of refuge, he publicly declared himself the ally, not of this power or that, but of England, and avowed himself adverse to Edward's designs, who was to expect no aid from him in endeavouring to recover his crown.

On the other hand Louis of France was thrown into ecstasies of delight. He sent for Queen Margaret and her son, the Prince of Wales, who had been living for years totally neglected, and almost forgotten in their poverty, and received her in Paris with the most splendid and expensive pageants and rejoicings. He at the same time despatched a splendid embassy to Henry at London, and immediately concluded with him a treaty of peace and commerce for fifteen years.

Warwick and Clarence made their triumphal entry into London on the 6th of October, 1470. Warwick proceeded to the Tower, and brought forth King Henry, who had lain there as a captive for five years. Henry was proclaimed lawful king, and conducted with great pomp through the streets of London to the bishop's palace, where he resided till the 13th, when he walked in solemn procession, with the crown upon his head, attended by his prelates, nobles, and great officers, to St. Paul's, where solemn thanksgivings were offered up for his restoration.

All this time Clarence was looking on, an immediate spectator of proceedings which pushed him farther from the throne. To keep him quiet, Warwick heaped every favour but the actual possession of the kingdom upon him. He joined him with himself in the regency which was to continue till the majority of the Prince of Wales; he made him Lord-Lieutenant of Ireland, and conferred upon him all the estates of the house of York. Warwick retained himself the offices of Chamberlain of England, Governor of Calais, High Admiral of the seas; his brother, the archbishop, was continued Chancellor; and his other brother, Montague, returned to the Wardenship of the Marches.

Warwick summoned a Parliament, which, surrounded by his troops and his partisans, of course passed whatever acts he pleased. The crown was settled on Edward, the Prince of Wales, and his issue; but that failing, it was to devolve upon Clarence.

Queen Margaret might have been expected, from her characteristic energy and rapidity of action, to have been in London nearly as soon as Warwick; but this was not the case. In the first place, she was in want of the necessary funds. Louis, who was chary of his money, probably thought he had done sufficient in enabling the victorious armament of Warwick to reach England; and poor King Réné, Margaret's father, was in no condition to assist her. In the meantime all the exiled Lancastrians flocked to her; and all were destitute. In February, 1471, she set sail to cross the Channel, but was driven back by tempests. Three times did she make the daring attempt to cross, though warned against it by the seamen of Harfleur; and every time she was driven back with such fury and damage, that many declared it was the will of Heaven she should not pass over; nor was she able to do so till the following month. Till that time Warwick held England in the name of Henry, and appeared established, if not exactly on the throne, in the seat of supreme and settled power.

The mock restoration of Henry VI. was not destined to be of long continuance. The ups and downs of royalty at this period were as rapid and strange as the shifting scenes of a theatre. There is no part of our history where we are left so much in the dark as to the real moving causes. It is difficult to see how Warwick, with his vast popularity, should, in the course of a single winter, become so unpopular as to render his fall and the success of Edward so easy. It must be remembered, however, that there was a secret schism in his party. Clarence was only waiting to seize a good opportunity to overthrow his father-in-law, Warwick, and climb the throne himself. Though he was by no means high-principled, Clarence was not so weak as to build any hopes on Warwick's having given him the succession in case of the issue of the Prince of Wales failing. Warwick had married another of his daughters to the prince, and it was his strongest interest to maintain that line on the throne.

All these causes undoubtedly co-operated to produce what soon followed. Burgundy determined to assist Edward to regain his throne, and thus destroy the ascendency of Warwick. While, therefore, issuing a proclamation forbidding any of his subjects to follow Edward in his expedition, he privately sent to him the cross of St. Andrew; and a gift of 50,000 florins furnished him with four large ships, which were fitted up and stored for him at Vere, in Walcheren. Besides these, he hired for him fourteen ships from the merchants of the Hanse Towns, to transport his troops from Flushing to England. These transactions could leave no question in the minds of the subjects of Burgundy which way lay the real feelings of their sovereign. But the number of troops embarking with Edward was not such as to give to the enterprise a Burgundian appearance. The soldiers furnished him were only 2,000. Edward undoubtedly relied on information sent him from England as to the forces there ready to join him.