EEA EFM application - Photograph too small? 24mm not 29mm

[cazatron]

I went to Timpson to take a passport photo to be submitted for my EEA EFM application. Apparently their computer checks all photos before printing to ensure the size is acceptable by the UK government. But the length of my face only measures 24mm, not the 29mm which is the minimum requirement. The shopkeeper insisted it is fine, I am still worried because compared to my partner's mine is a lot smaller, his is 34mm (which is the maximum). I will have to submit both our photos in my application so the size difference is even more obvious!

Has anyone experienced/seen this before, and do you know if the H.O. has accepted or rejected?

Thanks for your help.