From 1999 to 2004, he served as State Secretary and the First Deputy Minister for Press, Television, Radio Broadcasting and Mass Media in the Mikhail Kasyanov's Cabinet.

[2] In the period from 2010 to 2014, based on the decision of the agency's expert council, Rospechat provided state support to the Dozhd TV channel in the amount of 30.6 million rubles.

The older daughter Natalia Seslavinskaya has dedicated her career to the book industry, continuing the family tradition.

The book also includes some previously unknown drawings by Tatyana Mavrina and Antonina Sofronova: "France", "Anatole", "Under the Sign of Queen Pedok".

Mikhail Seslavinsky headed the jrganizing committee for the preparation and holding celebrations of the 100th anniversary of Konstantin Simonov.

Mikhail Seslavinsky headed the organizing committees for the preparation and holding of the celebration of the 125th anniversary of Konstantin Paustovsky and Marina Tsvetaeva.

In June 2023, the Pushkin State Museum opened the exhibition “The Book and Graphic World of Alexander Benois in the Collection of Mikhail Seslavinsky.

With additions from the funds of the State Museum of A. S. Pushkin”, dedicated to the 125th anniversary of the creative association “World of Art”.

He is a Knight of the Order of the Legion of Honor, a decoration he was awarded for his efforts to promote cultural ties between France and Russia.