Originally Posted by zat_dude

Sharing my experiences from the BKK-SOF return with a separate connection to LHR. The check-in staff in Thailand tagged my bags through to LHR without any issue.

After disembarking, and despite the signage for connecting passengers, we were herded together with arrival passengers through passport control. At this stage I got a funny feeling and decided to stick around near the baggage carousel for a few minutes and sure enough our bags were on there. Not seeing any official staff besides customs I decided to proceed to the arrivals/departures hall and re-check bags with BA.