Lots of videos have been uploaded to YouTube and are below. Couldn't really do any real shooting at Islamabad as it was dark and the airport was essentially empty at the time.
My only criticism would be against the A330-200 seating arrangement - the angled business class seats that Turkish Airlines offers on the leased Jet Airways planes is really annoying. You're very isolated, great for privacy but if you're with someone it gets hard to communicate with them. Also you have to look over your shoulder all the time to see anything - almost broke my shoulder trying to film!
Also, boarding at Istanbul can be via stairs and when you have an elderly father with you this isn't ideal either.
Overall Turkish Airlines is absolutely great and compared to the PIA fare it makes absolute sense to me!
But do enjoy my clips - it certainly has been a while since I contributed anything. I will upload some pics via Abbas in a short while also.
Take off from Heathrow
Arrival into Istanbul
Departure from Islamabad
Arrival into Istanbul (2nd time)
Arrival London (long-ish video)