Examples:

Logo size:
A3 size ads: 50mm.
A4 size ads: 35mm - distance from top of logo to top edge of page: 13mm.
Very small ads: 25mm can be used as minimum.
Placement of logo:
Logo may be placed in one of six positions:
Top of page: centered, aligned left or aligned right.
Bottom of page: centered, aligned left or aligned right.
Packshot height, abt 50 mm. Packshots to be placed in lower right corner.
General templates: