Brexit: Parcels sent from Britain to Ireland drop by 68%

However, it said difficulties were being experienced by small business or individual personal customers who were unaware of the “new complex data and tax requirements” which have applied from July 2021.

“Unlike parcels which are posted in bulk from large non-EU retailers who An Post can advise and assist with the new rules, An Post has no simple way of advising the personal customers or small businesses posting parcels to Ireland from outside the EU,” the company said.

Northern Ireland could have faced similar difficulties under the Northern Ireland Protocol but EU rules were never implemented on GB-NI parcels due to a grace period.

The Windsor Framework effectively makes this grace period permanent, though there will be some requirements for logistics companies.

Authorised parcel operators will have to share data with the government to monitor and manage any risks of smuggling into the EU market.

That data-sharing process should be in place by September 2024.