Rivalitem Limited | 17th November 1987 to 26th January 1988 |
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Sabball Limited | 26th January 1988 to 11th February 1988 |
Sabbal Limited | 11th February 1988 to 25th August 1989 |
Zenith Media Buying Services (Europe) Limited | 25th August 1989 to 4th April 1990 |
Zenith Media Worldwide Limited | 4th April 1990 to 26th January 2011 |
Alpha 245 Limited | 26th January 2011 to current |