The comet is visible in the night sky, then during daylight and then the night sky again - not possible.
Angus' telescope does not have the its legs extended, leaving it very unstable.
The space-plane registration is visible as C-FVEB. Although Canadian flag is flown at the launch, this registration is taken and belongs to amateur built aircraft since 2014.
Flag of the UK flown upside down in the background of the crowd scene for the launch.