Others, official agents, were watching the spectators, alert for any sign of trouble and seeking known faces. In uniform by the Horse Guards Yard stood a fair-haired man, just short of thirty: Gideon Jukes. He had been very busy that day and now kept to himself, shaken and avoiding contact with anyone he knew. Everywhere were soldiers whose faces he recognised. Always rather solitary, he felt himself to be a disengaged observer. Everyone around him seemed lost in the occasion. He was troubled by the event, not because he felt it to be treason, but because he feared the arrangements might go wrong. To Gideon Jukes, what had once been unthinkable was now the only course to take.

When movement caught his eye at the window, he raised his eyes to the scaffold with expectation and relief.

King Charles was met by the disguised executioner and his assistant. Heavy metal staples had been bolted to the scaffold floor in case it was necessary to chain him, but his demeanour remained quiet. Still in attendance, the Bishop of London received the King's cloak and his Order of the Garter, giving him a white silk cap. Charles removed his doublet and stood in his waistcoat. The King attempted to make a speech to the crowd, but the noise was too great. To the bishop he said, 'I go from a corruptible crown to an incorruptible one.' Then to the executioner, who was looking at him anxiously, 'Does my hair trouble you?' The executioner and the bishop together helped position the King's long hair under the cap.

Eyeing the block, the King exclaimed, 'You must set it fast.'