The Doctor paid no heed to even the possibility that the earlier urchin might be following him, for indeed, why should he? Arriving at the stall, he stopped sharply, drawing his medical bag up in front of him and waiting for the proprietor to take notice of him.

"Ah, Doctor!" The portly, oil stained man behind the table exclaimed, stepping forward, "And how are you this morning?"

"Well enough, good sir." The Doctor replied briskly, keeping both hands on his bag still, "The part I ordered from you some weeks ago, has it arrived yet?"

The proprietor made some uncertain noises, and turned to rummage through his stock to check while the Doctor waited patiently.