My husband 88years,me 75 had very bad experience at Heathrow as we requested for wheel chair assistance after reaching London from Hyderabad by flight no.BA276 in the afternoon.We had to walk to buggy,then dropped at Building A of terminal 5 where Very rude behaviour of the desk providing wheel chair. We were made to wait for long.Then wheel chairs were given for clearing security then buggy to B gates. Gates were announced 15 mins before boarding.Worst part is we were made to walk long distance with hand luggage for boarding flight BA189 5th July to board the bus ourselves.They don't serve luggage they only serve humans the person said at BA189 gate.We travelled standing in bus.Climbed very steep stairs. Could not carry hand luggage up the stairs.Requested some passerby.Horrible service, worst eexperience no wheel chairs in sight,very rude behaviour of wheel chair handling staff.The flight hostesses and steward were excellent. Except for this rude behaviour of the staff.The aircraft staff said they are not responsible and the Heathrow Airport staff providing wheel chairs are responsible.No wheel chairs were in sight near Boarding gate 189 B43.