I do feel let down by QR, i would think they would override the system and just put me on a DOH-LON flight, especially being booked in a premium cabin. I did a dummy booking DOH-LHR/LGW one-way and there were a lot of seats available for that date. My thoughts was what if i had not made any changes and just showed up at the airport for check-in with my first segment NRT-DOH confirmed, surely the check inn agent would have put me on the first flight out of DOH-LHR? They wouldnt keep me in DOH for 6 days ...

Thank you for the connection inputs with regard to my baggage, really hope they are able to check it inn all the way to LHR. Fingers crossed!