In message
-sept
ember.org, at 07:28:16 on Mon, 14 May 2018, Recliner
remarked:

Five bidders are in the running to build the first railway line under new
government proposals aiming to fund new tracks entirely with private cash.

There's HEx from the airport to Hayes, under "old proposals" for private
funding. And isn't East-West rail already in the queue for
privately-funded new lines?
--
Roland Perry