Quite Sad actually, Ironically on the 16th I did fly back to LHR and had done online seat selection the day before but not checked in which was done at the airport, selected row 43 A+B on the seat map which was not Exit Rows yet when we boarded it seemed to be 43 was an exit row with a toilet taking up space at the front. Anyway back to story, so I was suprised, there seemed to be a few people who seemed to have moved with a quite irate child. We sat on our searts and began to sleep, a quick pat with a women asking sorry these are reserved seats, I said yes I had reserved them online, she asked for our boarding passes, I showed her the pass and she thanked and quickly exited left. I thought it was odd as we did not select exit rows and I guess either the updated plane or the airport confirmed the seats