Heard such brilliant reviews for this pump, which is the next best thing (apparently) to taking your track pump out with you.

The downside is it's bigger than a mini-pump, but I haven't actually physically seen one.
Keen to check it out when I get back to the UK though.

http://www.edinburgh-bicycle.co.uk/c...l.cfm?ID=21208

Here's the link to their website:
http://www.cyclaire.com/howto.html

They ship overseas, apparently, for a £5 shipping charge.