 The station 's architecture is an austere combination of concrete and stainless steel , with stacked banks of escalators supported from the cross @-@ bracing structures spanning the station box and routes for passengers entering or leaving the station separated from those changing between lines . As with the other underground stations on the extension , the Jubilee line platforms feature platform screen doors to improve airflow through the system and increase safety . The station design won a number of awards including Civic Trust awards in 2000 and 2002 , the Royal Fine Art Commission Millennium Building of the Year award in 2000 and the RIBA Award for Architecture in 2001 . Both projects were jointly short @-@ listed in 2001 for the RIBA 's prestigious Stirling Prize . 
