[bloak]

In the font used for British number plates O and 0 are identical and 1 and I are identical. This link might work for an example:

https://www.dafont.com/uk-number-plate.font?text=OO01+III

Software that handles number plates needs to take account of this. Not all of it does but the glyphs being identical makes it quite clear where the responsibility lies.

[philipwhiuk]

Isn't the British solution to only allow certain combinations so this is always unambiguous?

e.g. a prior car we had was FE51 WOC - the O can't be a 0 because of the format requirements. Similarly the 1 can't be an I.