Holmes apart from using his extraordinary deductive reasoning, also employed a small group of street lads known as ‘The Baker Street Irregulars’ to get to vital clues. The Baker Street Irregulars feature in many of the stories, and Holmes realized their effectiveness as they instigated least of suspicion.

They were first featuerd in the novel ‘A Study In Scarlet’. The leader of this group was called ‘Wiggins’ and Holmes paid them a shilling a day including any expenses. Holmes also rewarded them with a guinea, worth one pound and one shilling, for vital information on an important case.