Hi Debra,In the UK, the more renowned Change specialists (with a people focus) are Towers Perrin and Hay Group. There are then a range of smaller boutiques who specialise in different areas of the change management banner - leadership development (Oliver Wyman - old Mercer Delta are good here), hard programme/change management (Big 4, MBBB etc are strong here) and softer behaviour change (lots of small Occ Psychs such as YSC, Kaisen, Kiddy and Partners etc). Hope this helps even though it is a little vague!K