1787920 Blackwall Tunnel: pagentry as the Prince of Wales, later King Edward VII, and Princess Alexandria attend the ceremonial opening of the tunnel, 1897 (b/w photo) by English Photographer, (19th century); London Metropolitan Archives, City of London; (add.info.: Blackwall Tunnel: pagentry as the Prince of Wales, later King Edward VII, and Princess Alexandria attend the ceremonial opening of the tunnel. Crowds line the street. The raised banner, flanked either side by union flags, contains a quote from a poem by John Dryden, \'Interest thy greatness in our mean affairs, And use thyself betimes to hear and grant our prayers.\' Poplar, Metropolitan Borough of; Tower Hamlets, London Borough of); 穢 London Metropolitan Archives ; English, out of copyright.