Thank you all for your answers about LHR. I agree that when transferring between various terminals,say 3 and 5 that there are only WTMD and my Medtronic pump does not alarm(I think some Animas pumps may) and agents have also been very understanding about not putting the loaner pump through X-ray as long as its been a clear bag which it has.
My concern is that if I enter LHR to fly home from outside the airport either being at a conference or a possible future cruise and have to go through more detailed security at what I assume would be Terminal 3?(to fly to the US). I am not a frequent international traveler-probably once a year-hence my concerns after the abysmal treatment at Kastrup-I have had 2 apologies from their customer service department over the incorrect process that the agent followed there and was promised I would not be subjected to that again-I am saving that email from that person for certain!
I have also contacted LHR about their policy on insulin pumps and they are totally inflexible about trying to opt out-they could care less if my pump malfunctions going through a scanner(kinda wonder if their horrible health insurance in that country probably has very few people on pumps to begin with?) I even offered as a physician to help them craft a policy to accommodate diabetics but I know they will not be willing to do this.
I thought that if you can't raise your arms above your head that they won't put you in a scanner? Is this correct or not?
Guess I need to make alternate plans the next time I go to Europe or stop flying on American-but have a lot of miles I need to use up!