How to watch BT Sport/Amazon Instant abroad

[Cyder]

Chaps, I'm out in Japan for the next few months working and would like to be able to access the BT Sport website to watch some rugby and Amazon Instant for some films/TV while I'm here.

Clearly neither company is keen on me being able to access their services while I'm abroad but knowing anything is possible on the internet is there any easyish way I can get around the system in order to be able to watch them?

Thanks

[Cyder]

Thanks for the advice guys I'll have a go with some of these ideas and see what works best, free ones first of course!