First of all: mea maxima culpa for having trusted the hated professional news media about a certain fictive elf's grave. We're endeavouring to do better. And in that spirit we've brought on Gareth Dennis, host of Railnatter on YouTube and the Trainsatlantic podcast. Somehow, Gareth has the ability to make Andy Burnham do what he tells him, and we're discussing the future of Great British…