Fitch has puts the UK on a negative watch - not a downgrade.
It will be a relief for the Treasury at the end of a big week that it is only a watch and not the loss of AAA status yet.
But it does mean that a downgrade from a second agency is now more likely by the end of April. This could be followed by a third downgrade, from Standard and Poor's.
More top news
The family of the police officer who was murdered in the Westminster attack have thanked those who were with him 'in his last moments'.
Thousands of fans gathered for a public memorial honoring famous mother and daughter who died just a day apart.
More sunshine this Sunday as British Summer Time begins.