Rating agencies issued a dour outlook for the UK economy on the back of the country's decision to go it alone.
Standard & Poor's cut the UK's credit rating by two notches from AAA to AA, making it the last of the three major credit rating agencies to strip it of the highest status.
Fitch also made moves to reduce the UK's rating by moving from AA+ to AA on the view that an exit from the EU would have "a negative impact on the UK economy, public finances and political continuity".
And Moody's also cut the UK's credit outlook to 'negative' from 'stable', but reaffirmed the Aa1 rating.
"During the several years in which the UK will have to renegotiate its trade relations with the EU, Moody's expects heightened uncertainty, diminished confidence and lower spending and investment to result in weaker growth," the rating agency said.
S&P echoed this sentiment, stating that the decision may lead to a "deterioration of the UK's economic performance, including its large financial services sector, which is a major contributor to employment and public receipts".
