The Turkish Airlines London Office can tell you how to check in for your flight. They will explain what documents you need and how to get your boarding pass. They can also help you check in online if you prefer. By checking in early, you can avoid long lines at the airport and choose your preferred seat. The staff will guide you on how to use self-service kiosks if available, making the process quicker and more convenient. They aim to make your check-in experience as smooth as possible.