This sound like the Super Bowl scare stores of the US. Trafficking is supposed to increase during the super bowl. (It doesn't, indeed escorts find a down turn in business during that event)
So this scenario id now happening in Glasgow, with a supposed increase in criminal activity and trafficking of women to satisfy the men attending the conferencve. The police cover then selves by saying they want to guard against violence agaunst sex workers, when in fact they will be targetting the women and arresting those working together and charging them with trafficking offences and brothel keeping.