So, despite the quickly-withdrawn mistakenly tweeted announcement of a move
to party chairman, Chris Grayling survives as Transport Secretary. Given
May's inability to make further large reshuffles, he could be set to stay
in that role for some time.

That's probably good news for the third Heathrow runway, but not so good
for TfL; Sadiq Khan and Grayling don't work well together, and perhaps see
each other as potential future rivals for the top job. It also means that
Grayling's pet plan for formal TOC/NR partnerships will probably be seen
through to completion.