We tend to keep away from politics on this forum, but perhaps this is one worth bringing up.
Our membership is made up from people across Ireland (north and south), Wales, Scotland, Cornwall and England, as well as several who currently reside in Germany, Portugal, France, Spain and Greece. I suspect that there are a few others too, but you will have to forgive me if I haven't mentioned your country.
At this stage I do not think it fair to speculate as to whether or not the vote goes for Scotland becoming independent and what all the ramifications will be, but how about a couple of "what ifs"?
For example, Sky has call centres across the UK, including a couple of Northern Ireland, a new one in Ireland, some in England and a few in Scotland. How do you think this might affect things?
The flag of the UK is another topic. Originally the Union Jack (when flown on the Queen's premises or Naval Ships) was for the Royal Family. It symbolised the Kingdoms of England and Scotland (1606) and later the Union of the Kingdom of Ireland (1800), but this was for the King and Queens.
It was only formally adopted as the national flag by Parliament in 1908. It is therefore called the Union Flag when not on a Jackstaff or a Royal building.
So IMHO the road would be open to having two flags should Scotland gain independence from the rest of the UK. One to represent the Royal family's status as the head of state of the different kingdoms, the other to represent the remaining countries of the United Kingdom.
The Union Flag has also been embedded into the flags of various other nations and their respective armed forces too, so any changes would have an effect across the globe.
As for historical references, many people have fought under the Union Flag and represents a huge investment by them and their relatives when it comes to various memorials.
This article on the BBC site gives a few examples: BBC News - What would the union jack look like if the Scottish bit was removed?
How do you thin things should go?
Should we have a Welsh dragon on the flag?
Note: References to historical references taken from Wikipedia.