Here is a listing of the Utopia tails used: - Letters R to Y with major variants.
Rendezvous - Hong Kong / China
Water Dreaming - Australia
Waves And Cranes - Japan
Waves Of The City - USA
Whale Rider - Canada
Wings - Denmark
Wunala Dreaming - Australia
Youm - Al - Suq (Market Day) - Saudi Arabia
I have tried to cover all the major variants used for each design. Some people will say that there are further variants and designs but for the most part these are just different sections used from the same pattern on different aircraft.
Where possible i have added the official titles as given by BA themselves.
Information is taken from BA's "Country Colours" booklet with additional information where missing from myself.