Exillon Energy plc

May Production Report

05 June 2015 - Exillon Energy plc ("Exillon Energy", the "Company" or the "Group") (EXI.LN), a London Premium listed oil producer with assets in two oil-rich regions of Russia, Timan-Pechora ("Exillon TP") and West Siberia ("Exillon WS"), is pleased to announce unaudited production data for the month of May 2015 ("the Period").

·     Our average daily production^[1] was 16,105  bbl/day during the period.

·     Average daily production for Exillon TP was 3,412 bbl/day, and for Exillon WS it was 12,693 bbl/day during       the period.

·     Our peak daily production^[2] was 16,847 bbl/day during the period.

Source: Average production data is based on monthly production reports submitted to tax authorities for MET payment purposes. Peak production is based on internal operations reports.

^{[1] The Company records production in metric tonnes.  Barrelization ratios are used for illustrative purposes only and are calculated based on the Company's estimate of the typical API of oil produced from specific fields.  The barrelization ratios used are 7.8037 bbl / tonne for Exillon WS and 7.44 bbl / tonne for Exillon TP.  Total production was 50,422 tonnes for Exillon WS, 14,216 tonnes for Exillon TP and 64,638 tonnes for the Group during the 31 days period.}

^{[2] "Peak daily production" represents the Company's estimate of aggregate production on the day on which aggregate production reached its maximum during the period. It does not represent the combined peak production of each separate field on different days, which may be higher.}

Media contacts:

Tom Blackwell, EM

Blackwell@em-comms.com

+7 919 102 9064