Readers ask why did it take so long? in this week's debate

The latest edition of our Dezeen Debate newsletter features the news that the Southbank Centre has been granted Grade II-listed status. Subscribe to Dezeen Debate now.

Last week, the Southbank Centre in London, which was once named "Britain's ugliest building", was heritage listed by conservation group the Twentieth Century Society.

Commenters think the move was "about time", with one saying "why did it take so long for this to happen", calling it "such a brilliant lump of concrete".