Lester is notable for his 2009–2010 redesigns for Penguin imprint Hamish Hamilton of four covers of J. D. Salinger books, including The Catcher in the Rye and Franny and Zooey.
[2] In addition to type design, Lester is famous for his prints, many of which are characterized by words built up of rich, dense calligraphic strokes and flourishes.
[7] Lester's design process is recorded in a February 11, 2010 Creative Review blog article and can also be seen in his short videos.
[7] As of mid-June 2015 Seb Lester had nearly 1 Million followers across his social media accounts[8][9][10] where he publishes videos of him performing his calligraphy.
In March 2016, his work makes the cover of the 33rd issue of Very Nearly Almost[11] where he talks about the effects of the digital media presence in his career and creative process.