After 1945, when the government of the United Kingdom broke the pacts with Poland and withdrew support for the Polish government, Raczyński remained in London, where he acted as one of the most notable members of Polish diaspora there.
He was active in various political and social organisations in exile, including the Fundusz Pomocy Krajowi (Help for the Country Fund) which actively supported the democratic opposition in communist-controlled Poland.
Between 1954 and 1972 he was one of the members of the Council of the Three, the collective presidential body of the Polish government in exile.
He was also a member of the Committee for Polish Affairs and an advisor of various British governmental agencies and ministries.

In March 1979, Raczyński became President in exile, after being previously chosen by the outgoing President Stanisław Ostrowski.
In turn, he chose as his successor Prime Minister Kazimierz Sabbat.

During the Raczyński presidency (1979–1986) the Solidarity movement was established in Poland.
Raczyński played an important role in raising awareness about the events in Poland in Western countries and in establishing closer ties with the opposition movement in Poland.

President Raczyński at some point considered naming Władysław Bartoszewski as his successor, as he wanted to choose someone "from the country" and with strong ties to the Polish opposition movement.
Bartoszewski, however, declined the offer.

After serving a 7-year term he resigned from his post on April 8, 1986.
He was the last Polish President-in-Exile who had held an important office during the era of the 2nd Republic: his successors, Kazimierz Sabbat and Ryszard Kaczorowski were in their twenties at the outset of the Second World War.
As he left office he received a praise for reuniting the Polish political emigration and reshaping the Government in exile.
After 1945, when the government of the United Kingdom broke the pacts with Poland and withdrew support for the Polish government, Raczyński remained in London, where he acted as one of the most notable members of Polish diaspora there. He was active in various political and social organisations in exile, including the Fundusz Pomocy Krajowi (Help for the Country Fund) which actively supported the democratic opposition in communist-controlled Poland. Between 1954 and 1972 he was one of the members of the Council of the Three, the collective presidential body of the Polish government in exile. He was also a member of the Committee for Polish Affairs and an advisor of various British governmental agencies and ministries.
In March 1979, Raczyński became President in exile, after being previously chosen by the outgoing President Stanisław Ostrowski. In turn, he chose as his successor Prime Minister Kazimierz Sabbat.
During the Raczyński presidency (1979–1986) the Solidarity movement was established in Poland. Raczyński played an important role in raising awareness about the events in Poland in Western countries and in establishing closer ties with the opposition movement in Poland.
President Raczyński at some point considered naming Władysław Bartoszewski as his successor, as he wanted to choose someone "from the country" and with strong ties to the Polish opposition movement. Bartoszewski, however, declined the offer.
After serving a 7-year term he resigned from his post on April 8, 1986. He was the last Polish President-in-Exile who had held an important office during the era of the 2nd Republic: his successors, Kazimierz Sabbat and Ryszard Kaczorowski were in their twenties at the outset of the Second World War. As he left office he received a praise for reuniting the Polish political emigration and reshaping the Government in exile.
Edward Bernard Raczyński