Originally Posted by
Lkeade
..The final leg of the flight does not allow seat selection until you get to LHR..
No assignment until you check in for the flight... not quite the same. I'd definitely try to secure a seat upon checking in.
And if you are an LH elite you can even get a seat assignment at any time which will then be canceled on the time of departure and you would be upgraded to a middle seat in the back.