The inaugural UDP group began in 2007, with 7 members. It had three mentors: Ray O’Connor (IRL), Margaret Hunnaball (ENG) and Ermanno Silvano (ITA)

Group 1: 2007 – 2009      
Umpire Country Start Grade Current Grade 
Marcin Grochal POL FIH World Panel Umpire
Luca Ferrara ITA NATIONAL FIH
Thomas Dumon BEL FIH
Stepan Podmol CZE FIH
Geoffrey Conn IRL NATIONAL World Development Panel Umpire
Florian Geschl AUT NATIONAL
Ana Faias POR NATIONAL Promising Umpire List