Belarus’ authoritarian President Alexander Lukashenko has extended his more than three decades in power in an orchestrated weekend election that the opposition and the European Union rejected as a farce.

Belarusians are voting in a closely-managed presidential election that is all but certain to extend the one-man rule of Alexander Lukashenko, in power since 1994 and Europe’s longest-serving leader.

Britain and Canada have imposed sanctions targeting the regime of Belarus' dictator president, Alexander Lukashenko, following his disputed election over the weekend to a seventh term.

Belarus’ authoritarian President Alexander Lukashenko is all but certain to extend his more than three decades in power in Sunday’s election that is rejected by the opposition as a farce after years of sweeping repressions.

No credible opponents were allowed to run against Alexander Lukashenko, who has ruled Belarus since the 1990s.

Europe’s longest-serving leader won re-election in a contest widely believe to have been rigged. The result cements the power of a leader whose country is considered Russia’s staunchest ally.

Britain on Monday imposed sanctions targeting Belarusian officials and defence companies after joining Western governments in condemning what they called "sham" presidential elections in the country.

Belarus' opposition activists and Western officials on Monday denounced an orchestrated election that extends the more than three-decade rule of authoritarian President Alexander Lukashenko. The country's exiled opposition leader called the result “sheer nonsense.

Belarusian President Alexander Lukashenko won a seventh consecutive term in office Sunday in an election denounced by the European Union and the country's exiled opposition. With all his opponents in prison or living in exile abroad,