Can I use a Ziploc bag for customs forms?
Can I use a Ziploc bag for customs forms? If you don't have a USPS Customs Form Envelope, you can also place those extra customs form sheets in a regular envelope or a ziplock bag that you label with the phrase Customs Forms, and affix that envelope to the outside of your package.
Do customs look inside packages?
Customs will sometimes open packages to inspect the contents and ensure that they match what is listed in the declaration form.
What needs to be declared at UK customs?
For goods over the £1,500 threshold and restricted and excise goods, and goods over 1,000kg you will need to make a full customs declaration either by yourself or through an agent.
What size Ziploc bag can you take on a plane?
What TSA wants is a bag that is the approximate dimension of a quart-size bag and is clear. That means that a ziploc bag from the grocery store works just fine as long as it is not larger than one quart.