OK. Let me get this

OK. Let me get this right. The unions are upset that companies are moving call centre activities abroad in order to save money. Correct me if I’m wrong, but aren’t these the same unions that campaigned for a minimum wage and are now campaigning for it to be dramatically increased (and speaking as an employer that has always paid above minimum pay, I can assure you that it has had an upward impact on all wages, which has a knock-on effect on to other prices, including property).
What makes me think that the unions are incredibly divorced from common sense is that they are threatening strike action unless things change. When will they learn that this sort of activity will only drive more employers abroad and deter inward investment to this country?