The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

GB101.12

Country / Post Great Britain
Date of Issue 15 May 2012
Primary theme Mankind (Clothes & costumes)
Subject Great British Fashion - Ossie Clark
Width 35.0 mm
Height 37.0 mm
Denomination 1st class
Number in set 10 (show set)
Layout/Format sheet of 25 & 50
Perforations 14.5 by 14
Stamp issuing authority Royal Mail of Great Britain
Printer Cartor Security Print, France