Originally Posted by David_Doyle

I think the OP believes that BA failed to make the correct request for assistance. In my case my request was mislaid somewhere along the line and the crew were seemingly not aware my aunt needed assistance. I had requested it through GGL and had email confirmation back so on her arrival at Heathrow it was surprising the operating crew were not aware of the request.

I fully agree though that provision of assistance is fully down to the airport. The fact that no-one answered the dedicated phone for assistance is quite telling.