We are traveling to Bangalore via London Heathrow airport using British Airways. Please be noted that you need to go through security check even if the connecting flight is on the same Terminal and Gate. As soon as you exit the flight there will be a flight display board with all the flight details. Check your terminal and gate. It was observed that if the connecting flight within next one to two hour then when you exit the flight from US there will be a person waiting to take you directly to next flight. For the Security Check normally you need to take train to Terminal 5 A Gates. As soon as depart from the flight into gate, there will be a elevator, takes you down to catch a train. Then go through Border security then security check. If you have kids or special needs then there is special board security queue which is quicker. Normally security check queue is longer and very strict. Security check process will land you in Terminal 5 A Gates. Check with BA staff for actual gate for your flight as normally gate will be announced very late. It could be B or C gates as well. If you gate is B or C, you can take a elevator down, then take a train to B/C gates.
You can find Terminal 5 Map at http://www.heathrowairport.com/static/Heathrow/Downloads/PDF/Heathrow_T5_Map.pdf
You can find Terminal 5 Map at http://www.heathrowairport.com/static/Heathrow/Downloads/PDF/Heathrow_T5_Map.pdf
