United Kingdom Commemorative stamps came in Sheets , Miniature Sheets, Prestige and Greetings Booklets. These too had many errors & flaws.

The colour shifts occur during printing process of the stamps. These errors and flaws vary a lot. 
The ones shown here have made a difference. The colour shift changes the appearance of the original picture.  For Example: 
Yellow flowers have green colour on it, Horses have multiple ears and Reins. On other stamps you see: Split Twigs, Lipstick out of place, Collar shift etc. All these shifts and variations are explained in our online shop with images.

Below are the errors & flaws which will gives information. Some of the Newly Discovered (ND) Flaws in Booklet Stamps.

Due to many Varieties and Flaws:  Deegam, Modern British Philatelic Circle (MBPC), Machine Collectors Club (MCC) and Stoneham (STN) also contributed. To summarise their contributions:
Ribbed Gum (Connoisseur Catalogue.
Phosphor Bands varieties e.g. Short bands. Inset Bands (Deegam Catalogue).
Reference Numbers for Booklets and Panes (MBPC, MCC Catalogue, Deegam & Stoneham Catalogues ).
Perforation Types for panes and margins (MBPC, MCC Catalogue, Deegam & Stoneham Catalogues).
Screened Values (Connoisseur Catalogue).