The image and 1000 words? Or 10,000 words! Anyway, here's a few: the London bubble filter*, Scottish wanting independence and probably, IMHO, NI fear of getting left out. No more to add. Interactive map of all areas etc at Daily Telegraph (I blanked out Gibraltar as they had it for 'Leave' but they voted overwhelmingly to Remain (naturally, going first they have to play safe - look where they are! - I suspect if they got to vote the next day (today, they would have voted 99.9% to Leave).
* Imagine if the UK had to leave it to parliament, to let our "elected representatives" decide!