[quote name='Skybone' timestamp='1469376419' post='3097809']
But surely, if you send them to yourself, then you shouldn't be liable for tax, as they are your property.
[/quote]
It doesn't matter. You legally have to declare a value on the goods you are posting, and that value will attract duty when it arrives in customs.
I don't understand why the system works in this way. Well, I do; Revenue generating.