He was a member of Academia Europaea, the PEN Club, the Société Européenne de Culture, fellow of Collegium Invisibile[4] and numerous other societies and associations.

While on a Fellowship at the Wilson Center in Washington DC, he met General Edward Rowny who introduced him to Lane Kirkland and Ronald Reagan.

[6] In August 1980, he joined the Gdańsk workers' protest movement and became one of the advisers of the Independent Self-Governing Trade Union Solidarność (Polish for "Solidarity") – NSZZ.

Between 1987 and 1989, Geremek was the leader of the Commission for Political Reforms of the Civic Committee, which prepared proposals for peaceful democratic transformation in Poland.

In 1989, he played a crucial role during the debates between Solidarity and the authorities that led to free parliamentary elections and the establishment of the ‘Contract Sejm’.

After the elections in 1991, President Lech Wałęsa asked him to form a new government, but Geremek failed to do so and Jan Olszewski was appointed prime minister instead.

From 1989 to 2001, Geremek was a member of the lower house of the Polish parliament, the Sejm, and chairman of the Political Council of the Freedom Union.

[8] In April 2007, Geremek refused to declare that he had never collaborated with the Communist secret service, which he was being asked to do under a new vetting law.

In May 2007, the Constitutional Tribunal of the Republic of Poland rejected most of the new vetting law, including the clause that would have made it mandatory for nearly 700,000 Poles to sign declarations certifying that they had never collaborated with the secret services under the old regime.

[9] Geremek died on 13 July 2008, in a car accident on the then national road 2 (nowadays national road 92) near Lubień in Nowy Tomyśl County,[18] when the car he was driving hit an oncoming van on the opposite lane,[19] due to Geremek falling asleep behind the wheel.

In January 2009, the European Parliament named the main courtyard of the "Louise Weiss", its principal building, after Bronisław Geremek.