Originally Posted by
SKT-DK
Does the timing of those LHR flights coincide with the arrivals and departures of QR, EK, LH and whoever flies 380s to BKK though, as there are limited number of 380 capable gates? - Just a possible reason, but by no means certain

Maybe but no way LH would give up a gate position on an A380 at one of it’s hubs

Anywhere else home airline gets priority