Unusual case of doping in British boxing

The boxer Larry “War Machine” Olubamiwo took certain anabolic steroids, HGH, IGF-1 and other doping drugs during 6 years. Although certain tests have been conducted earlier, he was caught just in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for forbidden preparations. Metabolites of steroids were not discovered in his sample. The boxer tested positive for EPO. EPO represents a blood boosting product.
Long-term intake of forbidden drugs by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to prove that the ban of Olubamiwo for administration of 13 different banned preparations is a real success of the UKAD in the struggle against doping.  
Andy Parkinson claimed that it was an unusual case. The boxer took steroids and other related medications for long period of time without fear to destroy his health, career and reputation. He was sentenced to 4-year ban.
But the alarming aspect is following: Olumamiwo could avoid detection for prolonged time, despites essential efforts of anti-doping officers to “clean” sports from usage of doping drugs.
Olubamiwo was caught just because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he was implicated in an investigation connected with illicit sale of anabolic steroids and other doping drugs in the US. Then the UKAD conducted a test that resulted in positives for EPO.
Robert Smith, the General Secretary for the British Boxing Board of Control, supported the affirmations of Andy Parkinson about efforts and success of anti-doping officers. He noted that the case demonstrated that cheating couldn’t be hidden.
What is your point of view about the case? Do positives for EPO and the ban of Olubamiwo manifest that anti-doping agencies succeed? Or does the case demonstrate that anti-doping policy is not proper?
Everyone can make own conclusion. But it is clear that the boxer could apply different banned substances for six years without being caught by anti-doping officers.