Moscow, Russia – March 25, 2011 – “COMSTAR – United TeleSystems” JSC (“Comstar” or “the Company”) (LSE:CMST), the largest integrated telecommunications provider in Moscow and 84 Russian cities, with a presence in Ukraine and Armenia, confirms that, following the announcements on 24 February 2011 and 21 March 2011 regarding  Comstar’s intention to seek cancellation of the listing of its global depositary receipts (“GDRs”), the UK Listing Authority has today cancelled the listing of Comstar’s Regulation S GDRs (ISIN: US47942P2083) and Rule 144A GDRs (ISIN: US47972P1093) from the Official List with effect from 8.00 am GMT. As a result, the GDRs will no longer be admitted to trading on the London Stock Exchange.