Five men are given lengthy jail terms [in 2010] after they are found guilty of grooming teenage girls in Rotherham for sex. The same year, police finally act on sexual grooming in Rochdale going back years " with a series of arrests. Police and child protection agencies in Rotherham had extensive knowledge of these activities for a decade, yet a string of offences went unprosecuted. [In 2014], Professor Alexis Jay publishes her devastating report on child sexual exploitation in Rotherham between 1997 and 2013. The report describes how more than 1,400 children were sexually exploited by gangs of mainly Asian males in the South Yorkshire town. It is scathing about a culture among police and council officials which ignored the industrial scale of abuse, instead treating the victims as troublesome teenagers. A gang of men who embarked on a "campaign of rape and other sexual abuse" against vulnerable teenage girls in Huddersfield were given lengthy jail sentences [in 2018]. The pattern of large-scale exploitation of mainly white girls by groups of men of mainly Pakistani heritage uncovered by West Yorkshire Police in Huddersfield mirrors what has happened in a number of other towns including Rotherham, Rochdale and Telford. Greater Manchester Police Chief Constable Ian Hopkins apologises [in 2020] to the children abused "in plain sight" by the grooming gangs his officers failed to bring to justice.