Hi, I am an international student, I recently got a new passport to apply for my three years open work permit. My old passport expires 2020 and won't be able to get me the three years owp ", that was why I went for a new passport and on the old passport immigration stamped cancelled without prejudice. Now My Canadian visa and uk visa are both on the old passport, and I intend travelling to the uk soon. Will I have issues travelling with both passports knowing the old one didn't expire before getting a new one? What do I need to travel with? Please help me out