I wouldn’t read too much into there not being any London dates announced. It’s pretty common for comedy tours to announce London dates later and tag them on at the end. (I’m a London resident and have noticed this many times). No idea why though!
Re PK: I also think he can be very irritating on talk shows etc. It’s like he thinks he has to be “on” all the time, and do this comedy act thing when he’s on TV, rather than just be himself (and he could just be himself and be funny). I get the impression he’s more comfortable doing the shtick, and not so comfortable just being himself. And he’s possibly not great at sharing the limelight, which is kind of the deal when you’re on a talk show. Just a thought.