For recent trips through LGW South I still have to be patient until the boarding pass scanner decides it has captured what it wants and lets me through to the security scanning area. However I have had no problems getting through the secondary check down in the pier by gate 4 (other than the huge queues the new machine seems to have created). In fact it doesn't even ask me to "Look Here" any more. So I snuck a quick peek at the operator's screen last time and saw a huge banner "Biometric Reconciliation Complete" message with a photograph of me on the right hand side.
I am thus wondering whether they have furtively gone back to using photographs having fallen foul of some Data Protection rule; something that other posters have suggested may well be possible?