The European Commission said on Monday that it will not take part in the campaign to keep Britain in the EU ahead of an in-out referendum in June.
"The Commission will not campaign, will not take part in the campaign," AFP has quoted spokesman Margaritis Schinas as saying at a news briefing.
"Our role of facilitator between the British government and its 27 partners stops here."
British Prime Minister David Cameron late Friday struck a reform deal brokered by the Commission at a European Union summit that gave the country "special status" in the 28-nation bloc.
The agreement reached after two days of intense negotiations, paves the way for the UK's EU referendum, expected to be held in June, and guarantees that Britain will never be forced to bail out members of the eurozone.
The deal also gives Britain the right to supervise financial institutions and markets to preserve financial stability.
Cameron said Saturday Britain would vote on whether to remain in the EU on June 23.
He went on saying that Britain is approaching one of the biggest decisions it will face in its lifetime - whether it wants to remain in the EU or leave, adding that it is about jobs, financial security and how the Britons cooperate to keep their country strong.
The British prime minister further emphasized that his cabinet had agreed to recommend the UK stay in a reformed EU.
Opinion polls show that a significant number of Britons have yet to make up their mind, though perceptions that the EU has failed to deal with the migrant crisis may be turning some towards a 'Brexit'.