For many people, next Friday was supposed to be a celebration. Boris Johnson spoke about an ‘independence day’ marking the beginning of a new era of national self-confidence. But as we approach 29 March, not even ardent Brexiteers can claim that there is anything to celebrate. Theresa May has been reduced to asking, or rather begging, the EU for an extension to Article 50 — something that the EU has said it will grant only if Britain can provide a good reason for needing the extra time.