When I was in England for a short time I was tasked with screening candidates for employment (software engineers). As an American, I was taken aback by most of the resumes including photos. That's just not done here in the US. Some American HR departments might even send back your resume and ask you to resubmit it without a photo. It seems to be standard practice in Europe, perhaps to convince you that the person interviewing is the person associated with the resume.
Of course, attractiveness factors in highly once you get your foot in the door, even if people try to act like it doesn't. Even straight male engineers seem to think more highly of attractive male engineers, just because of the "coolness" factor they may bring. There's really just not a lot of information gleaned from an interview beyond whether the person has the basic minimum knowledge for the field they are in, and these soft things take an outsize portion of the score.
Things may be changing or may be different in big orgs, I don't know. I was only familiar with SME hiring.