In a letter to the Sun and the Times, James purnell, who is the work and pensions secretary, said he was not seeking the leadership but wanted to trigger a debate. He is not "leadership material" (a term I've been told not to use, but it suits the purpose here). Purnell is the third cabinet member to announce they are standing down in the past few days.
It's becoming very much more like Ten Green Bottles than it is Don't Rock The Boat!