London, England, United Kingdom
Her Majesty The Queen, accompanied by His Royal Highness The Duke of Edinburgh unveiled this plaque to commemorate the 20th Anniversary of the opening of the Channel Tunnel and the launch of international high speed rail services between the UK and continental Europe. — Pancras Road
Listen to the audio guide for Elizabeth II and Philip Mountbatten blue plaque Free on WIP — starts by itself when you arrive, even with the screen off