You’re right about any extension being counter-productive. The feeling I’ve picked up from various industry leaders during TV and radio interviews is that they could cope with Brexit if only they knew what form it will take. The uncertainty is costing billions and our PM is not helping by keeping her ‘plans’ to herself. I don’t believe she’ll get anything worthwhile from Brussels, they’ve made their position clear many times - “no more negotiations”. So for me, she should present them with a set of “clean break” requirements, no strings attached, and make it very clear that we are out at the end of March.