Half an hour later he had cleared his desk and, with a filled briefcase, had allowed his assistant to leave ahead of him. He had switched off the lights, locked the doors, and they had gone down to the central hall in the lift. They had swiped their cards at Security, walked out into the rain and headed for the bridge. He did not look back at the building, did not know how many days he would be away from it, and whether he would win or lose… But the job would get his best effort. That, Len Gibbons guaranteed.

Across the bridge, he headed for the Underground station. He preferred to mingle with the masses that crowded the trains. He bought the two tickets and passed one over his shoulder, no turn of the head, no smile, to Sarah and felt her take it quickly, discreetly. Descending on the escalator he had the briefcase held tight across his chest, his coat sleeve hanging far enough forward to mask the chain linking the handle to the handcuff attachment on his wrist. Inside the briefcase were the maps, charts and lists for coded contact that would assist towards the state-sponsored killing of an individual whose life was considered forfeit… all, of course, deniable.

He wore the years well, fifty-nine, and was physically fit, mentally alert, with good colour in his face. His trade demanded ordinariness rather than eccentricity, and there was little about him that those on the platform would remember: no sign of the hairstyle under the trilby and behind the beige scarf, no sight of his shirt or tie because the raincoat was buttoned high. The briefcase bore no EIIR, embossed in gold, which would have shown he was a servant of the state. If any had noted him, glanced quickly at the trilby, they might have thought him a rather boring man whose employment shelf life drifted to a close.