Kalmarth

I'm going to be moving to the UK soon, I have a Thermaltake PSU in my system but they don't have the red switch on the back anymore to swap the power to the Higher voltage, they PSU say it has Active PFC, does this mean that I can just change the power cable to a 3 prong UK plug and it will work? the range of voltages it covers are 110-240v with 50-60 hz so that is right for the UK? anyone know if this will work?