Business leaders will call for a series of emergency measures to cushion the blow of the UK crashing out of the EU if Theresa May’s Brexit deal is not ratified in a critical parliamentary vote next week.

The Freight Transport Association, which represents big businesses including supermarkets and logistics companies who depend on the Dover-Calais route, says business should not have to suffer the consequences of a no-deal Brexit.

“I’m not going to let the logistics industry take the fall for political indulgence. It’ll be messy, expensive and not end well, and [has been] caused by people who suffer from ignorance or privilege. Or both,” James Hookham, the FTA’s deputy chief executive, told Business Insider.

The Confederation of British Industry, the motor industry, the British Chambers of Commerce and the Federation of Small Businesses along with the FTA have all expressed deep concern in the past month over the continuing Brexit uncertainty.

The FSB said it would call for article 50 to be extended until July.

“While it is of course just a hypothetical at the moment, if there is a big defeat on Tuesday … then our priority is to avoid drifting into a chaotic no deal on 29 March. In that circumstance, a short technical extension of article 50 until July should be considered,” said the group’s director of external affairs and advocacy, Craig Beaumont.

Separately, the FTA has prepared a shopping list of critical “mini-deals” it says the government must urgently seek from Brussels to ensure Britain keeps trading.

Top of the list are enough permits for lorry drivers to continue to transport goods, and a concrete no-deal aviation plan to keep cargo flights running.

It is also calling for an “approved exporter system” to enable companies to avoid having to fill in documents for each consignment they export or import and to strive to act as “one government at the border”.

The Road Haulage Association has said the existing government customs declarations forms, for example, are so long and impractical it would take eight hours to clear an average lorry travelling from Calais to Dover.

Pauline Bastidon, the FTA’s head of European policy and Brexit, said the EU’s limited no-deal contingency plans would not allow trade to flow freely.

“Proposals for aviation and road haulage, which FTA had relentlessly campaigned for in Brussels and other European capitals, are only temporary and could be revoked by the European commission at any time,” she said.

“Logistics is the beating heart of the economy, and one on which most businesses – including manufacturing plants, hospitals and shops – have come to rely on,” she added.

She said the industry was ready to take action but with just 80 days to go to 29 March it urgently needed “clear directions and a supportive environment” to avoid catastrophe.

The French authorities in Calais said last month they were so concerned about no deal that they were putting advanced contingency plans in place.

They are building temporary border inspection posts near the port for the mandatory checks on food and live animals that will be required after Brexit in a no-deal scenario.

The Calais port’s boss, Jean-Marc Puissesseau, insisted that it would not be the cause of delays across the channel. At present, 10,000 trucks a day cross the Channel between Dover and Calais at peak times.

Puissesseau told the BBC’s Today programme that Calais would not be the choke-point. “There will not be any delay. The trucks will be passing as they are doing today.”

But the Cabinet Office minister, David Lidington, later told the BBC programme that Calais did not have infrastructure in place to carry out all the necessary checks in the event of a no-deal exit.

“European law says all food exports and livestock exports from a third country to the EU have to be inspected 100% [and] checked at a designated border inspection post,” said Lidington.

Puissesseau said he was “very angry” and criticised the British transport secretary for spending £100m on ferries to prepare for no-deal Brexit – including on a firm, Seaborne Freight, that doesn’t yet own any ferries. “I’m very shocked, I consider it disrespectful for Calais and Dover,” said Puissesseau.