I ordered the BR last year from Zavvi along with a couple other things, it came in a bubble mailer and luckily had only a minor crease on one of the slip's corners.
This time I went with FNAC for two reasons, they ship in a sturdier box and no ratings logos on the slips (2 on the front, 2 on the back and 2 on the spine in case you miss the other 4), as those are printed on the UK editions, not stickers.