A major parcel courier has paused some delivery services into Europe - including Ireland - because of pressure caused by new post-Brexit red tape.

DPD became the latest company to warn that Boris Johnson's divorce settlement with Brussels had led to more complex processes at the border.

Seafood exporters said they have been hit by a "perfect storm" of bureaucracy, IT problems and confusion following Brexit.

Marks & Spencer said the new rules and regulations are set to "significantly impact" its overseas ventures in Ireland, the Czech Republic and France.

And hauliers described being "overwhelmed" by red tape due to new checks on deliveries to Northern Ireland from the rest of the UK.

DPD said that up to 20% of parcels had incorrect or incomplete data, meaning they had to be returned to customers, and announced a pause to its road service into Europe and Ireland until Wednesday.

READ MORE: Brexit: 'Many exports will halt' warns food industry leader 

The company said in a statement: "The EU-UK Trade and Cooperation Agreement resulted in more complex processes, and additional customs data requirements for parcels destined for Europe.

"This, along with delays and congestion at UK ports for channel crossings, has placed extra pressure on our turnaround and transit times.

"We are seeing up to 20% of parcels with incorrect or incomplete data attached, resulting in these parcels needing to be returned to customers, so that the required data can be provided.

"In view of this unprecedented set of circumstances we believe that it is only right to pause and review our road service into Europe, including the Republic of Ireland. During this time, we will work with our customers to validate and correct the data we have in our system, to reduce the delays and enable us to resume normal service.

"This pause in our operation will be as short as possible and we intend to recommence this service on Wednesday January 13."

READ MORE: Brexit: Scottish seafood industry hits out at 'shambles' amid customs delays​

Donna Fordyce, chief executive at Seafood Scotland, said exporters faced "new bureaucratic non-tariff barriers" with no one body able to fix the situation.

"It's a perfect storm for Scottish seafood exporters. Weakened by Covid-19, and the closure of the French border before Christmas, the end of the Brexit transition period has unleashed layer upon layer of administrative problems, resulting in queues, border refusals and utter confusion," she said.

"IT problems in France meant consignments were diverted from Boulogne sur Mer to Dunkirk, which was unprepared as it wasn't supposed to be at the export front line. There have also been HMRC IT issues on the UK side that need to resolved ASAP regarding certification.

"A lack of knowledge and understanding of the required paperwork means some companies are ill-prepared for the new checks, which are taking far longer because of the mistakes being uncovered. When the systems settle down, checks should be carried out on samples from each load but now entire consignments are having to be checked to satisfy requirements."

HeraldScotland: Marks & Spencer chief executive Steve RoweMarks & Spencer chief executive Steve Rowe

M&S boss Steve Rowe warned that the trade agreement between the UK and the EU is causing problems with "potential tariffs on part of our range exported to the EU, together with very complex administrative processes".

Haulier industry body Logistics UK said deliveries were being delayed as lorries arrived in Belfast with incomplete paperwork.

In order to avoid a hard border with the Republic, Mr Johnson agreed Northern Ireland would remain in the EU single market - but that has meant checks on goods arriving from Great Britain.

A Government spokesman said: "Businesses and hauliers have made huge strides to get ready but we were always clear that there would be some disruption at the end of the transition period.

"Although many businesses have moved goods successfully since January 1, we are aware of some issues, and are providing guidance and support.

"Hauliers can use our 'Check a HGV is ready' service to make sure they have correct paperwork, and must obtain a Kent Access Permit if they plan to travel via Dover or Eurotunnel."

HeraldScotland: David LonsdaleDavid Lonsdale

Opinion: Blueprint will be vital to the future of retail

The past year has been tumultuous for our country and for Scotland’s retail industry.

READ MORE: Like never before, retailers showed their worth when it was most necessary. We should be full of admiration for the way retailers and the skilled and passionate people who work in the sector have responded to the onslaught of Covid.

Opinion: Graham Cunning: Deal activity likely to rise in first quarter as owners eye changes to tax policy

A vibrant deal making sector has always been a good barometer of how an economy is adapting to change and preparing for the opportunities of tomorrow.

READ MORE: Whilst 2020 has been a year many will wish to forget, Scotland’s business community has faced up to the challenge and shown a remarkable capacity to do deals, take risks, innovate, and evolve. 

Sign up

You can now have the bulletin and the top business news stories sent direct to your email inbox twice-daily, and Business Week for the weekly round-up on Sunday: