Ricin the attack on Georgi Markov another Bulgarian defector, Vladimir Kostov, survived a similar attack. Kostov was standing on an escalator of the Paris metro when he felt a sting in his lower back above the belt of his trousers. He developed a fever, but recovered. After Markov's death the wound on Kostov's back was examined and a ricin-laced pellet identical to the one used against Markov was removed. Several terrorists and terrorist groups have experimented with ricin and caused several incidents of the poisons being mailed to U.S. politicians. For example, on May 29, 2013 two anonymous letters sent to
Waterloo Bridge as the South Bank, which includes the Royal Festival Hall, Waterloo station, Queen Elizabeth Hall and the Royal National Theatre, as well as the BFI Southbank, which is directly beneath the bridge. The north end of the bridge passes above the Victoria Embankment where the road joins the Strand and Aldwych alongside Somerset House. This end housed the southern portal of the Kingsway Tramway Subway until the late 1950s. The entire bridge was given Grade II* listed structure protection in 1981. The nearest London Underground station is Waterloo, the nearest National Rail station is London Waterloo. Waterloo Bridge Waterloo Bridge