Finally got around to watching it on the recorder (24 hours later). Didn't see anything to whinge about with the flag escorts and I suspect that the general public watching live and on TV wouldn't have picked anything at all.
The opening sequences were good. The NHS sequence was bollocks. There were bits that even as a pom I couldn't understand.
Overall OK - ish.
I spoke to my daughters last night. The eldest one said, "They've had 7 years to plan and they've come up with that???"; the youngest said, "Brilliant".