Boris Johnson hailed 19 July 2021 as “Freedom Day”, easing the last of the social restrictions imposed on the British public since the onset of the coronavirus pandemic 16 months earlier and drawing a line under some of the darkest days in our recent history.The vaccine rollout had been a triumph, Covid-19 appeared to be on the ropes, Gareth Southgate’s boys had done us proud at Euro 2020 and a summer heatwave had descended. What could go wrong?That question was answered just three days later, when eerie photographs of barren supermarket shelves began to appear on social media, forcing both the stores themselves and government ministers to urge shoppers not to engage in panic-buying in response to the apparent shortage of everyday goods.The phenomenon felt like a return to the bad old days of March 2020 and the very beginning of the pandemic, when frantic consumers raced to gather up as many six-packs of toilet rolls and bottles of hand sanitiser as they could carry to ensure plentiful supplies at home should society indeed collapse in the manner of a Netflix zombie movie.This fresh instalment of hysteria was blamed initially on a “pingdemic”, an explosion of notifications from the NHS Test and Trace app advising employees to self-isolate for 10 days after coming into contact with someone who has tested positive for the virus and therein causing chaos at workplaces across the country.With no exceptions made and official policy still one of “contact isolation” rather than “contact testing”, the UK economy was apparently being hard-hit by staff absences in response to the smartphone-issued quarantine orders, a problem affecting every sector, from retail and hospitality to transport, tourism and manufacturing, causing shifts to be rescheduled and services to run late or be cancelled altogether.But supermarket aisles left empty for the want of stackers or stock would prove to be merely the most immediately visible symptom of a range of issues that had been festering and were beginning to surface.Given the highly intricate and interconnected nature of the global supply chain, in which outsourcing is common and a single product is seldom manufactured, assembled, packaged and shipped by one outfit alone, the chaos being wrought by Covid was not simply confined to Britain but playing out across the map, with sickness absences at factories anywhere potentially leading to bottlenecks and delays everywhere.The NHS app was retooled to be less sensitive on 2 August, meaning fewer employees were unable to work at home, but still the problems persisted, prompting the pundits to look a little deeper for the root cause.An underlying shortage of HGV drivers was also clearly playing a part, a long-term headache already exacerbated by Brexit and worsened by the complications associated with the pandemic.The UK haulage industry estimated that Britain had lost 25,000 European lorry drivers in the wake of the EU membership referendum as they were forced to return to their countries of origin by tighter visa rules and the loss of free movement of labour principles.The three successive national lockdowns imposed in response to the Covid outbreak meanwhile meant that as many as 40,000 applicants to the DVLA in Swansea hoping to take a lorry driver’s test had been unable to do so, their forms piled high and gathering dust.Throw in an ageing workforce and British hauliers were facing a shortfall of as many as 100,000 drivers.Iceland’s managing director Richard Walker told BBC Radio 4’s Today programme in late August that the lack of drivers had to be addressed by the government and was “impacting the food supply chain on a daily basis”.“We’ve had deliveries cancelled for the first time since the pandemic began, about 30-40 deliveries a day,” he said. “Things like bread, fast-moving lines, are being cancelled in about 100 stores a day.”Asked whether he blamed Brexit for the situation, Mr Walker did not hesitate to say yes, branding Britain’s decision to leave the EU “a self-inflicted wound”.His sentiments were echoed by other supermarket bosses, members of the Shadow Cabinet and, eventually, even by transport secretary Grant Shapps and the Office of Budget Responsibility, the latter pointing to a 15 per cent fall in British trade with Europe as a contributor to the shortages.For Trades Union Congress general-secretary Frances O’Grady, the rapid growth of zero hours contracts and the “casualisation” of work through the gig economy was another key factor.“It’s not just about pay and conditions,” she said. “It’s about the business models that we have seen mushroom over the past 10 or 20 years.“Supply chains are in peril. That should be a wake-up call for all of us. The solutions are quite simple. It’s about evening up that collective bargaining power and about treating people with dignity and decency at work.”When the problems began to manifest anew in the shape of the flash fuel crisis of late September and early October, prompting drivers across the country to queue around the block for access to desolate service station forecourts, Mr Johnson’s Cabinet was forced to act.It drafted in Army drivers to ferry petrol deliveries from distribution terminals to the pumps under Operation Escalin (a Brexit emergency backup plan hurriedly retrieved from a drawer), begged retirees to get back in their cabs and offered temporary visas to European hauliers, who were, understandably, not particularly inclined to help out.That episode – propelled to an extent by some unhelpfully alarmist media coverage, centred around the inevitable shots of snaking lines of traffic – did eventually ease, but not before post-Brexit Britain had been likened to “boycotted Cuba” by Europe’s newspapers.From the disastrous disappearance of Haribo to the nightmarish prospect of a world with no Irn-Bru, Walkers Crisps or Weetabix, here is a reminder of some of the key products we ran dry of in 2021, the year we went without.HariboOne of the first victims of the HGV driver crisis was the German confectioner, who first reported supply issues on 2 July before the extent of the problem became frontpage news – a dire turn of events for Tangfastics loyalists.Trade magazine The Grocer reported that Haribo had told its wholesale and retail customers that it was “faced with several challenges throughout our supply chain including a shortage of drivers” but was “working flat out to manage the situation”. 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