Controversy over restoration of Waterloo Station poem

In 1999, an artist was commissioned to help improve a subway leading from Waterloo Station. In 2019 the same artist protested about efforts to restore the art.
The artist is Sue Hubbard, and the work of art is Eurydice, a long poem that was stenciled into the walls of a subway linking the station to the IMAX cinema by Railtrack, with the Arts Council and the BFI.
Written in a series of three-lined stepped stanzas the poem was set out so that it could be read whilst walking through the tunnel. Us