FACTBOX: Irritants in British-Russian relations

(Reuters) - Russia's Foreign Ministry summoned Britain's ambassador on Monday in a row over the status of the British government's cultural arm.

British Council offices in St Petersburg and Yekaterinburg resumed working after the New Year break despite a Kremlin order to halt operations on the grounds they had violated international and domestic law. Britain says the move is illegal.

Here is a list of other major irritants which include spying allegations, the murder of a Russian emigre in London and diplomatic differences over Kosovo:

* LUGOVOY

-- Russia enraged Britain by refusing to extradite ex-KGB bodyguard Andrei Lugovoy, key suspect in the murder of emigre Alexander Litvinenko.

Litvinenko, a former Russian state security officer and Kremlin critic, died in London in 2006 from poisoning by radioactive polonium .

The row led to London and Moscow expelling diplomats in July 2007.

* BORIS BEREZOVSKY

-- Moscow resents London granting refugee status to Russian tycoon Boris Berezovsky who has become a fierce critic of President Vladimir Putin.

Britain has repeatedly rejected Russian requests to extradite Berezovsky, wanted in Moscow on several criminal charges. Berezovsky, who has lived in London since 2000, says the charges have been invented to silence him.

* AKHMED ZAKAYEV

-- Russia blames Britain for granting asylum to several leading Chechen rebels, notably separatist leader and former actor Akhmed Zakayev.

* KOSOVO

-- Russia has blocked a British draft resolution in the U.N. Security Council which would effectively give independence to Serbia's breakaway province of Kosovo. Moscow says it will not support any decision on Kosovo unless it is backed by Belgrade.

* OIL AND GAS

-- British oil major BP was forced to sell its stake in the Siberian Kovykta gas field to state-controlled firm Gazprom at a knock-down price.