STORMONT's parties last night joined the chorus of calls for Boris Johnson and Rishi Sunak to resign.
The Tory leader and his chancellor were both fined by police for taking part in Downing Street parties during lockdown.
The British prime minister's wife, Carrie Johnson, was also fined but the authorities have yet to confirm why.
A birthday party was reportedly a surprise do for Mr Johnson, organised by his wife and for which the Chancellor was also in the room.
Northern Ireland minister Conor Burns previously said Mr Johnson was "ambushed by a cake" at the event, at which up to 30 people are said to have gathered and sung 'happy birthday'.
Last night, Mr Burns tweeted: "The PM has already apologised for the event of 19th June but will understand renewed anger.
"There is a big job to rebuild trust. On the ground in NI the importance of that work cannot be overstated. As a government we must focus on delivery for the people every day led by the PM."
But SDLP leader Colum Eastwood repeated his call for the prime minister and the chancellor to resign.
The Foyle MP said it was clear that "even the lowest standards are far too high for Boris Johnson and his administration".
“While thousands of people were forced to watch their loved ones die through the windows of care homes and hospitals, the British prime minister, his chancellor and scores of their staff were enjoying birthday cake and popping wine corks in Downing Street," he said.
"At a moment of deep personal sacrifice for many, they demonstrated cynical selfishness that makes a mockery of the lengths we all went to in order to keep our friends and neighbours safe."
The calls for Mr Johnson and Mr Sunak to quit were echoed by Alliance deputy leader Stephen Farry.
He said their resignations were necessary because "integrity in public life has to matter".
“It is now established both the prime minister and chancellor have broken the law and the ministerial code,” the North Down MP said.
“They set the rules and then subsequently broke them, at a time when they were asking everybody else to make huge sacrifices – missing births, funerals and basic human social interactions. The flippant nature of their responses since then has only compounded the hurt felt by many."
DUP Upper Bann MP Carla Lockhart said everyone "must be equal under the law and equally subject to the law".
"If anyone has been found to break the law then they must take the consequences," she said.
"In Northern Ireland we saw those involved in setting the regulations blatantly breach them, bringing thousands onto the streets for a funeral when the told everyone else they could only have 30."
She said the prime minister had acknowledged that rules had been broken and apologised.
"Unfortunately we all remember Michelle O'Neill saying she would never apologise for her attendance at the funeral."
