It's run by people who are annoyed by the so-called "West Lothian question" – the fact that Scottish MPs can (and do) vote on matters such as health, education, local government etc. for England, while the reverse isn't true. But most people don't see any point.

My preferred solution to the West Lothian question is to let Scottish and Welsh MPs go home on a Thursday afternoon and conduct English-only business on Friday. I don't think the Scottish MPs will complain about that . The additional benefit is that they can get back to their constituencies sooner for weekend surgeries etc. – after all, they have further to travel.

P.S. I think the official government objection to Devolution for England is that would basically be federalism, and federalism doesn't work when one state is much bigger than all the others. Which is probably true.