Got everything with plenty of time left... but very surprised that Australia and Switzerland send more than China. I would have thought China would be in the top 10.
Give it time, I'm sure they will be in a few years. Although I was expecting Australia to be higher up myself - they do seem to gravitate back to the motherland! :-)
Really surprised about India and Pakistan with all the expats and second generationers there that still have family. Most of the first and second generation Indians and Pakistanis that I know living in the USA get visiting relatives every couple of years.
Most of the descendants of the Raj I know in the UK go back there fairly regularly, often yearly. I don't think their relatives come here often enough to make the impact you are expecting. Too cold
So of the 14 countries that send the most tourists to the UK, 11 of them come from the European Economic Area - so let's make it more difficult/expensive for them by leaving it. Brexit - the gift that keeps on giving....
You should add The Republic of Ireland as a type-in for Ireland because Northern Ireland is already technically in the UK, and "Southern Ireland" of the Republic of Ireland is actually what you are referring to
Just type in 'Ireland'. It's literally easier. You seem like the type of person who would say 'Accept European Union instead of EU!' in a quiz that features it as an answer.
For example, you have the China (Peoples Republic of China) and Taiwan (Republic of China), but on Jetpunk only China and Taiwan are accepted.
Also Northern Ireland isn't a sovereign nation so there should be no confusion.