Do you know about turkish airlines terminal ?
Arriving at least three hours before to the scheduled departure time is advised for Turkish Airlines flights at Heathrow, which operate from Terminal 2. This is especially true for international flights. You can avoid feeling hurried by arriving early and having enough time to finish the required check-in processes, drop off any luggage, and go through security. Known as "The Queen's Terminal," Heathrow's Terminal 2 is a bustling international gateway with a number of amenities to help you relax while your wait. Once you've checked in, you can explore Terminal 2's numerous duty-free stores and dining options.
website : https://www.airlinesairportsterminal.com/turkish-airlines/turkish-airlines-heathrow-international-airport-lhr-terminal/