Bangkok is typically 7 hours ahead of London. When it's 12:00 PM in London, it's 7:00 PM in Bangkok. Thailand uses ICT (UTC+7) year-round.
During UK summer time (March to October), the difference is 6 hours. During UK winter time, Bangkok is 7 hours ahead of London.
Morning London works best! 9:00 AM - 11:00 AM London corresponds to 3:00 PM - 5:00 PM Bangkok (UK winter) or 4:00 PM - 6:00 PM (UK DST). Morning London catches late afternoon Bangkok.
Bangkok is one of the world's most visited cities. The 11-hour flight from London serves massive tourism traffic and growing business ties in Southeast Asia's largest economy after Indonesia.