I have just had a decent passport photograph taken at Timpsons. Nothing fancy I just stood against a wall in the open shop, assistant grabbed a camera and took the photo and a whizzy computer machine, cut it down to the right size, sent it to the passport people, printed four copies for me and gave me a code to put on my online passport form.
The resulting photo actually makes me look younger than in the photo taken 10 years ago, which to be honest was truly, truly dreadful, even passport officials used to do double takes and scrutinise me to work out whether there really was any resemblance between me and the photo.
One thing I did when the photo was taken was start the process of a closed mouth smile; tightened the muscles either side of the mouth, not enough to suggest I was smiling, but enough to get rid of the hang dog, down in the mouth look.