Australia
Helter Skelter - 88697016232
While identical to the European promo CD, this copy was clearly used for promotion in Australia, as evidenced by the large sticker on the front of the card sleeve.

Europe
Helter Skelter - 88697016232
European Promo CD including radio edits of "Acquiesce" and "The Masterplan".

Japan
Epic - EICP 696
The Japanese (Sample) is identical to the official release with the exception of the yellow promo sticker on the back inlay. The CD also has the words SAMPLE LOANED printed in orange around the inner ring. 

UK
Big Brother - RKIDSCD 37P
This  copy of the "Stop the Clock (EP)"  is identical to the official release except for the "Promo Only Not For Sale" sticker on the barcode section of the cardboard sleeve, meaning this version was originally distributed to radio stations or music reviewers prior to the official retail launch.

UK
Big Brother - RKIDSCD 37P1
This is one of a pair of Promo CDs issued to promote the "Stop the Clocks (EP)". Housed in a green sleeve, it features a matching, predominantly green disc, both sporting the album's signature "dartboard" design. It includes the official radio edits of "Acquiesce" and "The Masterplan." 

UK
Big Brother - RKIDSCD 37P2
This is the second of the pair of Promo CDs issued to promote the "Stop the Clocks (EP)". Housed in a blue sleeve, it features a matching, predominantly blue disc, both sporting the album's signature "dartboard" design. It also includes the official radio edits of "Acquiesce" and "The Masterplan", however the tracks are in reverse order.

USA
Columbia - CK 91582
This is the Bonus 4-track EP included with Best-Buy copies of "Stop the Clocks" in the USA. Containing the same for tracks as the official release this promotional disc was packaged with the album at the point of sale. For more information, click this link, to visit the the "Stop the Clocks Special Release" page.