What is the current experience like at Heathrow Terminal 2 for flights to Bangkok?

Travelers have reported mixed experiences when flying out of Heathrow Terminal 2 to Bangkok. Recent accounts include a traveler mentioning they could only enter the terminal 3 hours before their flight, experiencing an hour-long check-in line, followed by a 20-minute wait at security. Another traveler reported a longer check-in time of 90 minutes and delays with baggage claim upon returning. In contrast, some found their check-in to be much quicker, with only an hour wait and minimal security delays. Overall, there are concerns over Terminal 2's efficiency, but business class travelers expressed optimism about smoother experiences.