It's far more of a political embarrassment rather than an economic issue.
Moodys (who are the people who issue the rating) are only saying what we as a nation have knownfor ages, that our recovery out of recession is harder and taking longer than was first planned.
It won't make it any harder for us to borrow money given that there is only Germany and Canada of the worlds major economies that still hold a AAA rating.
Labour says it's a political embarrassment because it proves the Coalitions economic policies aren't working.
The Coalition say that the message from the credit agency is that we have a debt problem. They already knew this, were dealing with it and say that Labour shouldn't have got us in this mess in the first place.
Who is right?
It's another one of those Obi Wan Kenobi moments.
Depends on your point of view.