Here's how to get the two TLM minifig polybags in the UK: buy a kids' mix at Odeon cinemas. Thanks to David for the news and BrickFanatics for the image, who go on to say "we’ve checked with the Odeon who have confirmed you don’t have to be seeing the film or any film for that matter in order to buy a Kids Mix meal, so you’ll be able to pop along to your local Odeon chain buy two meals and get both minifigures."
They don't say whether you have to be a kid, though, do they... I'll be at my local Odeon tomorrow evening with my wife, to watch TLM of course, so I'll see if can grab some. I hope she likes Fruit Shoot and popcorn :-)