I've received confirmation that the British government is in fact willing to mail copies of their excellent Rough Guide to a Better World to people outside of the UK.
You can order a copy by emailing Enquiry@dfid.gov.uk. Please be polite and reasonable (in other words, don't abuse the privilage).
(Thanks to Patrick Hall for the heads up!)
Yup, a copy is on its way to me right now. Thanks!