Another, more active statement of solidarity to Charlie Hebdo by Albert Uderzo there.
The remaining staff of Charlie Hebdo are currently working under police protection out of the offices of the French newspaper Liberation on the next edition of the cartoon satirical magazine, to be published next week. A million print run, instead of the usual 60,000, the money to publish has been raised from a conglomerate of French newspapers and Google and the UK's Guardian newspaper, though people who wish to make donation towards the magazine are able to do so here.
But the print run is likely to not come close to being enough to filling demand. The best places outside continental Europe to find copies will be in airport newsagents and news stands, those in central public transport areas in capital cities or large newsagents in city centres that already have strong international content. French language bookstores may also be a possibility.
In London, if Heathrow is too far, I would look to St. Pancras Station, Waterloo (ha) station or the big newsagents in Soho. I always used Good News on Berwick St. near Gosh Comics when I worked near there. And if you are in a different British capital, Edinburgh has the International Newsagents.
For those in the US, your best bet may to be to ask a friend in Canada, where the magazine is regularly, more widely distributed. But Manhattan has the Around The World news stand. West Hollywood has the Centrefold. There will be more. If people could post their own local recommendations in the comments, or e-mail them in, I would be most grateful.
There will also be eBay, though copies of recent issues have been selling for hundreds of dollars, given the intense global interest in the magazine. However, it is likely that much of this is in a bubble. If you really want a copy of the magazine, you may be better off waiting a while, or choosing an older copy – and not one with Mohammed on the cover… they go for much more money.