Planning a trip to London in the spring but confused about what I can carry and use. I'm not worried about what can be sold. Here are my questions. 1. I understand tanks must be 2mil or less. Any thing else to consider? 2. I mix my own liquid. How should I transport that? Can I put a large bottle in my checked luggage and carry a smaller 10mil bottle? Will they check it for child resistance? Will I have to find a way to label my bottles? 3. How strict do you think they will be? Are the regs more targeted at sellers or users?