In terms of adding photo to a CV, I can tell you that I once applied for a Marketing postion for a very well known airline and they asked me to send my application through the post with a photo. This was not a customer related role or a cabin crew but just a office role. So this goes against what some people have said and I think major companies are the main employers who ask for photos. Although I do look like a super model but thats another story. Save it for another day.
P.S. NOT TRYING TO SHOW OFF