Mix the cream cheese with blue cheese and cream. Add Worcestershire sauce and chives, mix until combined.
Place in a small ring mold lined with plastic wrap (or use plastic wrap to form the cheese mixture into a ball) and place it in the refrigerator for five hours.
Unmold, fill with watercress and spread top and sides with caviar. If formed into a ball, spread caviar around the outside and place watercress around as garnish on the serving plate. Serve with crackers, wafers or thin toast.