Russia's gas monopoly Gazprom has recently said it wants to expand European operations, with speculation centred on a possible bid for the UK's Centrica.
But the UK was considering in the beginning of this week to block a potential takeover of Centrica by Gazprom, as the Financial Times reported.
Gazprom said that that blocking its plans to expand across the region will "not produce good results".
The company head Alexey Miller explained that competition has been intensifying for energy resources and Gazprom could turn to other markets including China.
"Attempts to limit Gazprom's activities in the European market and to politicise questions of gas supplies, which are in fact entirely within the economic sphere, will not produce good results," Miller said after the meeting with European Union ambassadors on Tuesday.
Ferran Tarradellas Espuny, spokesman for Energy Commissioner Andris Piebalgs, said that Mr Miller's statement "gives grounds to our concerns on the growing foreign dependency of European energy supply".
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Gazprom Warns Europe About its Gas Dependency
Gazprom, one of the main suppliers of natural gas to Europe