Queen offers sympathy to Poland after president's death
A Polish centre in London has set up a book of condolence
The Queen has expressed her "deepest sympathy" to the Polish government and people after the death of President Lech Kaczynski in a plane crash.
Gordon Brown said the whole world would be "saddened" and Tory leader David Cameron called it a "black day".
Scores died in the crash in Russia, including Ryszard Kaczorowski, Poland's president in exile during the Communist years, who lived in London.
The Rev Canon Bronislaw Gostomski, from a Polish church in London, also died.
The aircraft was carrying more than 80 passengers, including some of the country's top military and civilian leaders, as well as the president's wife, when it came down in thick fog as it approached Smolensk airport, in western Russia.
The delegation was flying in from the Polish capital, Warsaw, to mark the 70th anniversary of the Katyn massacre of thousands of Poles by Soviet forces during World War II.
Polish and Russian officials said no-one survived the crash.
In her message to the Polish government, the Queen spoke of the president's "long and distinguished public service".
She also paid tribute to the other victims, including Mr Kaczorowski.
"The deaths of many other of Poland's leading figures, including former President in Exile Kaczorowski, only serve to deepen this tragedy," she said.
The president and his wife met the Queen in London in 2006
"I send my deepest sympathy to you and to the whole Polish nation."
The Prince of Wales, who went to Poland on a Royal visit last month, sent his condolences to Warsaw, saying he was "deeply upset".
Barbara Tuge-Erecinska, Polish ambassador to Britain, said the plane crash was "the biggest tragedy for Poland since the end of World War II".
"There's no Pole in Poland or worldwide who is not suffering and feeling this loss today," she said.
"We lost again our elite, we lost personal friends, we lost people we admire."
Wiktor Moszczynski, a former spokesman for the Federation of Poles in Great Britain, described Mr Kaczorowski as a "very venerable, highly respected figure in the Polish community in London and Poland".
He said the UK's Polish community was in shock, but events were "bringing people together".
"Whatever differences there have been in the past, people are remembering the positive things about the president."
Tributes for Rev Gostomski, the Polish president's personal chaplain and parish priest at St Andrew Bobola Polish Church in Shepherd's Bush, west London, were being paid at special services on Saturday evening.
Father Marek Reczek, a colleague, said Rev Gostomski was a popular figure who had been in office for eight years.
"It is a very difficult time for our parishioners. Many of them have been coming into the church to pray," he said. "They have been crying."
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