Plaid Cymru will campaign to revoke Article 50 if a no-deal Brexit remains a possibility.
An emergency motion at the party’s conference in Swansea supported its current policy of a second referendum or people’s vote in all circumstances, unless the threat of no-deal continues in which case they will campaign to revoke and remain in EU.
The motion was submitted jointly by the party’s parliamentary groups in the Senedd, Westminster and Brussels.
In his speech to delegates, Carmarthen East and Dinefwr MP Jonathan Edwards said that Brexit was having the same effect on support for independence as the years Margaret Thatcher era had on support for devolution.
The conference will conclude later today.