Video: London 2012 Olympics: Boris Johnson saddened by Dow Chemical resignation Meredith Alexander, who sits on the Commission for a Sustainable London 2012, quit her unpaid role live on BBC's Newsnight over the controversial £7 million deal with the chemical giant, which has angered human rights campaigners because of Dow's links to Union Carbide, the company responsible for the Bhopal gas disaster in 1984. Mayor of London Boris Johnson, reacted to the "surprising" news during his visit to the World Economics Forum in Davos. He said: " I think it is sad obviously, but it is a bit surprising because the chair of the Commission for a Sustainable 2012, and indeed the commission itself, has decided that the Dow sponsorship was actually fine. They looked at the thing and couldn't find a problem so why this has taken place now is not fully clear to me.