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Det Ch Insp Jamie Sherlock, of Police Scotland, said Steven Johnson was the victim of a "shocking and unprovoked" attack.

Det Insp Daniel Fenn, on his ninth raid of the week, says some barber shops such as this are claiming income of £100,000 to £150,000 a month.

Det Insp Melanie Johnson, who led the operation for Greater Manchester Police, said her own local High Street had 10 barbers and a mini-mart, which was "not sustainable".

"Members of the public are angry. They can see these fronts are there," says Det Insp Fenn.

Det Insp Fenn says organised crime groups are different all over the country, but here he has been seeing familiar patterns of shops staffed with asylum seekers or illegal immigrants, many of the people in the barber shops being from Kurdish backgrounds.