Article sums up all the ways the UK will be hurt in case of no Brexit deal, this is only one of these:
The no-deal notices published by the government reveal the extraordinary level of costs and bureaucracy that such a scenario would entail, as well as the chaos it would mean for Britain's borders. If there was no deal Britain would revert to "third country" status, and the government has detailed a long list of extra checks that firms exporting and importing to and from the EU would face. Businesses would need to make customs declarations, pay tariffs on both imports and exports, and invest in expensive new computer systems to track goods. "If the UK left the EU on 29 March 2019 without a deal, there would be immediate changes to the procedures that apply to businesses trading with the EU. It would mean that the free circulation of goods between the UK and EU would cease," the government said. Extra procedures are both timely and very expensive for businesses. Many British firms which export or import goods have warned that they would cease to operate very quickly under such a scenario.
How a no-deal Brexit could cripple Britain - Business Insider
The cabinet meets this morning as the tide seems to be turning in Theresa May’s favour. The hard Brexiteers’ tactic has blown up in their faces. They urged the prime minister to step up preparations for leaving the EU without a deal, to convince the EU that we would be prepared to walk away from the talks if we don’t get what we want. Instead, those preparations succeeded only in frightening the living daylights out of the British public, which might help persuade them that any deal would be better than stockpiling medicines and lorries queueing from Dover to Birmingham. Today’s special cabinet meeting on no-deal preparations will only intensify this new version of project fear – a project made all the more credible by being based on taking sensible precautions in case the Brexit talks collapse in failure. Hence the problems faced by Dominic Raab, the Brexit secretary, as he was sent out to face the BBC this morning. He was one of those demanding more planning for no deal to strengthen our bargaining position, and now he is trying to reassure us that our mobile roaming charges will still be cheap after Brexit, but many of the 28 papers to be published today are likely to contain some alarming scenarios.
Theresa May’s plans for a no deal Brexit have turned out to be her best weapon | The Independent
Dominic Raab has been reprimanded by Michel Barnier after the EU’s chief negotiator discovered the British government had written to the 27 other member states asking for side negotiations on transport in the event of a no-deal Brexit. The Brexit secretary was confronted by Barnier during their most recent meeting in Brussels over correspondence sent in recent days to EU capitals by the Department for Transport. The letters had asked the member states to prepare to engage with the British government in side deals on aviation and haulage, to allow key trade flows to continue in the event of the UK and the EU failing to come to an agreement on leaving the union by 29 March 2019.
Barnier confronts Raab over discovery of Brexit no-deal letters to EU27 | Politics | The Guardian