Maybe, dutchessy, there was a "London town" cheer close to the video-filmer but not in the hall generally. When I was contrasting the audience reaction to this line at the concert earlier in the week with this 1st June show, I was referring to what I could hear coming from the audience in the RAH as a whole. For the earlier show, I was in about Row 7 of the arena area, on the left, and could hear the "London town" cheers coming from various parts of the venue. For the 1st June show, we had our worst seats (in the middle, more or less, of Row 19 in the arena) and I could not hear much of any reaction anywhere to that line. Of course, as I think I also said, I found Mark's vocals less clear than I would have liked during the louder songs, so maybe others elsewhere in the hall were similarly afflicted.
You will doubtless be aware of how, on some concert recordings, voices can be heard talking during songs or shouting out requests. They may spoil the recording but rarely spoil the listening of most of the audience. Perhaps that is what happened on this occasion. A cheer that sounds loud on a recording may be very localised in terms of its audibility in the hall as a whole.