Yep, definitely Chicken Little:

It doesn't matter what the Guardian calls her. Her successful court case was not to do with "thwarting brexit" but was everything to do with ensuring that the prime minister did not assume powers that she was not entitled to assume. In that regard we could consider Gina Miller to be a damn sight more democratically-minded than an arrogant and weak prime minister who tried to sidestep parliamentary process. And the sky might not yet have fallen in but our economy is ailing, business confidence is low, productivity is flat-lining and the pound is almost a basket case. And, oh I nearly forgot, we have no brexit plan. We've fallen three-quarters of the way down the building. Some of us can see the ground coming at us rapidly whereas you are enjoying the puffy little clouds and the birdsong whilst whistling a merry tune. Enjoy. You haven't got long.

"Productivity is flatlining: UK productivity grows strongly but still lags behind Europe (Telegraph 7.May)
"economy is ailing": UK economic growth bounces back (Guardian 4 July 2018)
"we have no brexit plan": We have no agreed and published Brexit plan.

Again, a post containing many of Steve Shaw's beliefs, but a little short on anything to back them up.