Torrential rain in Northern Ireland causes flooding in the towns of Newry and Newcastle in County Down.
Lockdown restrictions are relaxed in England, Northern Ireland, Scotland, and Wales as the number of cases continues to reduce, with non-essential shops, pubs, gyms, restaurants, hairdressers, community centres, libraries, and theme parks permitted to reopen. Domestic holidays are also permitted again in England with members of the same household. A "stay at home" order is ended in Northern Ireland, and secondary school pupils from years 8–11 return to school.
Sinn Fein announces that Martin McGuinness, current Deputy First Minister of Northern Ireland and former Irish Republican Army commander, will be a candidate for the Irish presidential election with John O'Dowd serving as acting Deputy First Minister.
Thousands of homes and businesses in Northern Ireland are without water as melting snow and ice from the recent freezing weather conditions reveals burst pipes. Northern Ireland Water says it is alternating supplies from reservoirs in order to help alleviate the crisis in which some have been without supplies since before Christmas.
Former Northern Irish First Minister Peter Robinson, leader of the Democratic Unionist Party, tells "The Sunday Times" that the conduct of his wife, politician Iris Robinson, with her young lover has led him to shake hands with deputy First Minister Martin McGuinness (Sinn Féin) for the first time.