People who purchase custom number plates or 'personalised registrations' across the globe tend to like combinations with the number '1' in them. Now we assume the reason behind this choice is the fact this number takes little space on the number plates themselves, and also, everyone likes to be number 1.
Number 1 combinations are categorised by many as the most valuable of numbers, depending on what the rest of the combination is and how short and 'perfect' the number plates are.
Many like number 1's in the number plate combinations as they often look like the letter 'I' and it makes it easier to create a word or name look alike combination. Great combinations with the number 1 on custom number plates tend to be snapped up rather quickly and often at a big price tag, however, the likes of the '1' registration sold in Abu Dhabi, or the 'F1' registration in the UK prove that the demand for these combinations are high.