(Adds dropped word "outlooks" in headline)
LONDON, June 27 (Reuters) - Ratings agency Moody's willdowngrade the credit rating outlook for major British banks to"negative" on Tuesday because of the fallout from the vote toleave the European Union, Sky News reported, citing sources.
A Sky News reporter said "a number of big UK lenders" hadbeen told by Moody's that their credit rating outlook wouldshift to negative from stable or positive.
Fitch and Standard & Poor's cut Britain's sovereign creditratings earlier on Monday, judging the vote to leave the EU willhurt the economy. (Reporting by Andy Bruce)