The Commons Foreign Affairs Committee says that if Scotland votes 'yes' in the referendum on independence next year, it would 'lead to a degree of legal uncertainty that the international community would not tolerate.'
In other words, the UK's reputation could be seriously damaged if Scotland became a separate country.
The report, 'Foreign policy considerations for the UK and Scotland in the event of Scotland becoming an independent country', warns of 'a number of adverse political and technical consequences' and predicted a decline in the UK's standing within the United Nations, European Union and NATO.
The committee, chaired by Richard Ottaway, Conservative MP for Croydon South, cautioned that Scotland would lose many of the benefits it currently enjoys from being part of the United Kingdom.
Scotland's Deputy First Minister, Nicola Sturgeon MSP has written a spirited response, intimating that some of the report's contents are self-serving, self-interested and selective . She highlighted the fact the the committee was made up of "politicians who oppose independence for Scotland".
She insists that "The best people to take decisions about Scotland’s future are the people who choose to live and work in Scotland."
There are 504 days until D-Day, Thursday 18th September, 2014.
Citizens of the UK's northernmost country will be asked a simple "Yes/No" question: "Should Scotland be an independent country?"
De-coupling Scotland from the UK isn't like dividing up a birthday cake. There are literally hundreds of historical, cultural, financial, political and strategic relationships to consider.
Until we know the answer for sure, the pro and con camps will continue their war of words, rhetoric and propaganda.
What's clear right now is that the battle lines have been well and truly drawn and the fight to keep Scotland part of the United Kingdom will be just as fierce as the battle to extricate it by Scottish nationalists.
Thoughts on customer service, communication and, of course, reputation management.