After trying to replicate the Reinhart - Rogoff results and failing, they reached out to Reinhart and Rogoff and they were willing to share their data spreadhseet. (businessinsider.com)
9 am update: Baston has posted this piece on the Guardian website explaining his methodology and with a link to a spreadhseet of what he sees the Boundary Commission proposing. (conservativehome.blogs.com)