From today customs officers will check ferry traffic between Wales and Ireland. It's the first time the customs checks have been in place since 1992.
Customs officers have been recruited by the Irish Government to cope with Brexit and will be deployed in Dublin Port and Rosslare Harbour.
They won't be carrying out checks just yet on vehicles arriving from Holyhead, Fishguard and Pembroke Dock. But they will be warning lorry drivers about the paperwork they could be expected to produce in just eight days time.
The Irish Government released a full statement on the announcement:
Although the UK Government is hoping to delay Brexit until June 30, that depends on the unanimous agreement of the 27 other EU member states at a special summit next Wednesday evening.
Otherwise there will be a no deal Brexit in one week, at 11:00pm on Friday 12 April.
Theresa May and Jeremy Corbyn are due to meet later for more talks, aimed at reaching a last minute compromise to put to MPs.
If they finally accept the Withdrawal Agreement negotiated by the Prime Minister, unrestricted trade between Britain, Ireland and other EU countries would continue until at least the end of 2020.