The gap between reckless Brexit promises and reality will soon be too big to ignore

What must it be like to be in the inner circles of this government, watching the economy bounce from crisis to crisis? Shortages mount, while livestock that suddenly cannot be put into the food chain is slaughtered and sent to rendering plants. Ships are diverted from UK ports because no drivers can be found to transport their cargo once it is offloaded. In response to ministers’ threats to suspend the trading arrangements for Northern Ireland – that we are now told the government never believed in to start with – there is reportedly pressure within the EU to begin preparations for a trade war.

The prime minister goes off to Marbella, where he pretends to paint pictures; the business secretary, Kwasi Kwarteng, is said to be pinning his hopes for an easing of the current energy crisis on a “wet, windy and mild” winter. Yet the Conservative party is still ahead in the polls, apparently shored up by the weakness of the Labour party and the clear, optimistic narrative that Boris Johnson has so far managed to project on to events. And I wonder: in cabinet meetings and ministerial get-togethers, do they laugh at the apparent absurdity of it all, or anxiously exchange estimates of when the roof might finally start to fall in?

After all, the central political fact of life in the UK could not be more stark. Whatever the effects of the pandemic and supply-chain issues that are evident all over the world, we are fundamentally living with the gigantic consequences of a gigantic act of recklessness, led by many of the people in charge – and now unravelling.

In Scotland, the results of Brexit sit at the heart of Nicola Sturgeon’s drive for independence; in Northern Ireland, they are the focus of no end of anxiety. But in England and Wales, the contrast between the realities of life outside the EU and what we were promised seems like some cruel deceit at the heart of a family or marriage: silently acknowledged and understood, but so far largely unspoken. Looking to the future, one big political question surely demands to be asked: what happens when some watershed point is reached, and the fact that people were conned becomes inescapable?

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We all know the promises made by Brexiteers in pursuit of what they wanted – of cheaper food, easy trade deals, that £350m extra a week for the NHS, and all the rest. What is still underestimated is how much hope a lot of people were thereby encouraged to invest in the idea of leaving the EU. When some people backed leave, it was the first time they had voted in their lives. Many did so not out of bigotry or nastiness, but a kind of desperate belief that things might finally get better. Europe, they had endlessly been told, was a drain on both the UK’s attention and money: as one Brexit voter told me in 2018, the simplest available solution was to “get out, and repair the country”. If that collective belief has so far shown no obvious signs of fading (indeed, it lives on in the implied links Johnson draws between Brexit and “levelling up”), that is probably an indication of how much faith some people still have in it – and, by implication, what a seismic moment we will have reached when it no longer makes any sense.

Brexit was also an expression of a dire breakdown in public trust, which had been under way for several years, furthered by the effects on politics of the internet, intensified by the MPs’ expenses scandal, and traceable in large part to the war in Iraq. That conflict and its aftermath, as the former UN ambassador Jeremy Greenstock later put it, was “one of those things that got people in this country thinking [that] our elite, our toffs, our leaders up there are not listening to us, are not looking after us in the way that we want”. It also alerted us to how far institutions could be pushed away from the demands of truth and sense.

For any serious politician, Iraq should have been a salutary lesson in how big deceptions change things in messy and unpredictable ways, and the pretext for a profound rethink about how politics and power operate. But it did not quite play out like that. One of the most overlooked aspects of modern British history is the fact that the supporters of military intervention included such Conservatives as Johnson, David Davis, Iain Duncan Smith, John Redwood and Michael Gove. In that context, their eventual championing of Brexit represented something grim: people using a collapse in trust they themselves had contributed to, to build support for a course of action that risked squashing trust yet further. (It is telling that in July 2016, Davis used the publication of the Chilcot report about Iraq to accuse Tony Blair of being a liar – and then, three months later, brazenly told the House of Commons that if leaving the EU went to plan: “There will be no downside to Brexit at all, only a considerable upside.”)

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Among some of the people we once termed remainers, there seems to be a belief that the chaos Brexit causes will sooner or later have beneficial political effects. When people realise their error, perhaps the political mainstream will realign in a pro-European direction; eventually, Labour may rediscover its European voice and lead us back in. It is an appealing vision, but I am not sure the world works like that any more.

One of the surest signs of England’s strange political condition is the way that the right seems to benefit from the very chaos it causes. Eventually, if people’s anger rises and cannot be quietened, Johnson will doubtless put out the union jack and direct it towards the French and Germans; if their fury grows so uncontrollable that it somehow sweeps him away, it may well benefit altogether shadier forces. Put another way, taking such a vast, historic gamble with this country’s future was irresponsible enough, but doing it in the age of QAnon and Tommy Robinson was reckless beyond words.

All this enforces a duty on the politicians who might eventually lead us towards something better. Dysfunctional circumstances give rise to dysfunctional politics, particularly if bad faith is allowed to run rampant and plain truths remain unspoken. So people in the political mainstream – by which I chiefly mean Labour MPs – need to start loudly talking about Brexit, the promises of the people who led the campaign for it, and what life outside Europe is doing to us. Whatever happens, the resentments Brexit causes are likely to benefit some dark political forces, but without voices trying to direct people’s exasperation towards something positive, that problem will be even worse.

Such realisations have seemingly yet to arrive in the minds of Tory Brexiteers. It may take a few years of queues and chaos for everything to become clear; Johnson’s undoubted political skills and the opposition’s shortcomings will probably delay any moment of reckoning yet further. But when it eventually comes, the cleverer politicians among them will surely feel it as a pang of remorse – realising, perhaps, that whatever their aims, hindsight will cast them not as visionaries, but people whose hubris and carelessness were always going to have disastrous consequences.

• John Harris is a Guardian columnist