Just coming in from the Bioware forums - for your information, Amazon.co.uk is NOT participating in the regular preorder campaign for DA2. The two bonus items Fadeshear and Lion of Orlais will NOT be included in your order! For confirmation, visit social.bioware.com.
http://social.bioware.com/forum/1/topic/141/index/5750005/5 Direct link to the confirmation by Chris Priestly if you cannot find it. All other retailers are offering the standard pre order bonuses so if you didn't pre order signature edition you might want to consider looking at other retailers to get everything that you are paying for.
And you can get the amulet of ashes if you pre order from play, but only for xbox 360 and pc. Nothing for PS3, which is completely wrong. Amazon need to pull their fingers out, because i'd prefer to pre order it from here.