Thanks to all for your help and information and advice.
I have a fellow physician and former medical students who are UK citizens who do not speak kindly of the NHS-so that is my only reference point on that issue. Did not intend to insult anyone. I made a possible assumption that perhaps not as many UK citizens use insulin pumps,hence the lack of knowledge at Heathrow and total indifference by them to my inquiries about opting out for those medical devices. Although I agree that going through US airports is a PITA, I have not encountered refusal anywhere in the US to opt out of the body scanners or X-ray machines due to my insulin pump or loaner pump-and I have been able to obtain a visual/swab inspection of my medical devices. I usually travel internationally with a spare pump as a backup just in case my pump would get damaged as trying to order a spare while abroad would incur week long delays getting that package through customs. Since no current insulin pump manufacturers have managed to develop a pump that is not subject to malfunction by going through both X-ray,CT,MRI or airport scanners,this continues to be a problem for diabetics.
Thanks for the info on Terminal 3 which I assume would be a possible future check in terminal for me when I would return to the US since American flew me into LHR Terminal 3 and I transited to Terminal 5,then on my return from Copenhagen I arrive in Terminal 5 and flew home to the US from Terminal 3.
I have been pleasantly surprised with responses to my concerns at Kastrup and am in dialogue with people at Heathrow about revising their rigid policies for no medical opt outs. I have also been receiving correspondence from several people in Washington,DC from TSA headquarters who seem responsive to my concerns on this global issue and they continue to reply and forward my inquiries up the chain of command.
I know that all of us get very frustrated with what happens in the airports, but so far I have been pleasantly surprised that my health concerns have received very gracious replies and all have fulfilled there promises to assist me.
I will report back as this situation develops as I do want to continue being able to travel that does not jeopardize my health.
For those of you who are healthy,please remain thankful for this when you encounter the unpleasant security issues as "road warriors"!
Thanks for reading.