The poems are selected by Judith Chernaik, the American writer who came up with idea of Poems on the Underground, along with poets George Szirtes and Imtiaz Dharker.
The project has inspired copycats in Paris, New York, Beijing, Shanghai, Warsaw and Moscow.
The first poems, which appeared in January 1986, were Up in the Morning early by Robert Burns, Ozymandias by Percy Bysshe Shelley, This is Just to Say by William Carlos Williams, The Railway Children by Seamus Heaney and Like a Beacon by Grace Nichols.
TfL said the programme has brought world-class poetry to millions of London Underground customers, “transforming daily journeys into moments of reflection and connection”.