It will be the standard Conservative talking point; that the recession doesn't really exist, it's all these evil economists, many of them civil servants, trying to get Labour elected. Labour has now been out of power so long that it can't be directly blamed for the woeful state of the British economy, so the next strategy is to deny there is a problem at all.
All the Brexit "dividends" that were promised have proven phantoms. Creating any kind of friction with your primary trading partner is utter stupidity. Britain has been a merchant nation since the Middle Ages, with deep links to the Continent. In fact, whether it was the Habsburgs, Napoleon, the Kaisers or Hitler, the primary objective was to create a continental system that would keep Britain out. Heck, even de Gaulle got in on the "keep Britain off the Continent" when he blocked Britain's entry into the customs union at a time when Britain's economy was falling over a cliff.
And lo and behold, this time it wasn't some Continental demagogue trying to wrench Britain away from Europe, it was the likes of Nigel Farage and Boris Johnson who accomplished what Britain had been fighting to prevent since the Battle of Agincourt.