Clip 1 - Marginal, did he cross the white line or not? - Hard to say. Remember the lines mean don't cross them, they don't mean don't overtake.
Clip 2 - Off to prison, collect a ban, etc ...
I have been in a worse position than this in the New Forest. A five mile tailback with double white lines up the middle. My Brother and I on separate bikes. We stayed in our lane and overtook in the gaps when the white lines were broken, but always pulled back in before the lines went solid again. Yes, it cost us time as we could have ripped past most of the queues, but we didn't flout the law.