Context: Colquhoun's utilitarian approach to the problem – using a cost-benefit argument to obtain support from businesses standing to benefit – allowed him to achieve what Henry and John Fielding failed for their Bow Street detectives. Unlike the stipendiary system at Bow Street, the river police were full-time, salaried officers prohibited from taking private fees. His other contribution was the concept of preventive policing; his police were to act as a highly visible deterrent to crime by their permanent presence on the Thames. Colquhoun's innovations were a critical development leading up to Robert Peel's "new" police three decades later.

Question: Who started the Bow Street detectives?
Answer: Henry and John Fielding

Question: How did the Bow Street group pay their employees?
Answer: stipendiary system

Question: How did the Thames River Police pay their employees?
Answer: full-time, salaried officers prohibited from taking private fees

Question: Who came up with the concept of the 'new' police?
Answer: Robert Peel

Question: What schedule did the Thames River Police employees work?
Answer: full-time

Question: Who fired the Bow Street detectives?
Answer: Unanswerable

Question: How did the Bow Street group get paid by their employees?
Answer: Unanswerable

Question: How did the James River Police pay their employees?
Answer: Unanswerable

Question: Who rejected the concept of the 'new' police?
Answer: Unanswerable

Question: What schedule did the Thames River Police employees not work?
Answer: Unanswerable