OK So you know that the Ball you have in Times Square is a representation of the Ball at Greenwich in London which descends twice everyday as an indication to all ships captains setting sail from London as the correct time. Hence Greenwich Mean Time which is the zero time zone for the world. So as for the ball being in YOUR culture, I have to take issue in a good natured and nah nah ne nah nah kinda way

This is never going to be used as 'Evidence'. Its a lead and HMRC dont require warrant to investigate, enter or seize. They will conduct a 'Random' investigation in to these people and then discover evidence which will lead to a prosecution. HMRC use a 'Model for Life' and it tracks your inputs and outputs with an algorithm for reasonable adjustments of expenditure then there is a surplus which emerges and it is YOUR job to explain where the surplus is and why you have not paid taxation on that amount. If your good, they walk away with less penalty, if your bad THEY walk away with a lot more and the rule of thumb is that if your investigated, they are going to walk away with something. Your almost better being sure to point them in the direction of something to have. Its just a job and some are more pleasant that others at doing it. Most of us owe more than less