peebee wrote:...She then then got an e-mail from Moorfields which said that they were wrong & it was an S1 form she needed, not a Greek EHIC. ...
In my opinion, and I stress it is only my opinion, Moorfields have got it wrong twice.
Firstly, they were correct to say that they needed an EHIC card BUT they were wrong to say that you should get it in Greece. Up to several years ago, can't remember exactly when, if you had an IKA book through an S1 form then you did indeed apply to IKA for the EHIC card. Then the rules were changed so that if you have an IKA book through an S1 form you have to apply back to the country that issued the S1 form.
You cannot simply use the normal on-line EHIC application process. You have to ask DWP for a special EHIC application form that they send to you in paper form, already partly completed. They will only do this if they have you on their records as being registered with IKA, which typically they won't have because IKA do not believe they are supposed to return the second part of the form. IKA claim they had to do so before the rules changed but, according to them, after the rules changed they don't need to. I would ask DWP for the application form, wait till they tell you you are not registered and then write back explaining that you are piggy in the middle because IKA say they don't need to return the form and would they sort it out with IKA. That should get you the EHIC application form.
Secondly, they were wrong to tell you they needed an S1 form. As far as I know, an S1 form issued by DWP can only be used to register you for health care with the reciprocal health provider in another EU country. I do not believe an S1 form issued in the UK can be used to get treatment in the UK or get reimbursement for treatment in the UK. Details of DWP Healthcare Team
. I believe that, in the absence of an EHIC card, you should have phoned this contact, explained the situation and asked for a reference number to give to the hospital providing the treatment so the hospital could bill them directly. That is what I was told to do if I had a health problem when travelling elsewhere in the EU, including the UK, while they sorted out giving me an EHIC. Whether there is some way you can do that after the event I honestly don't know but you could try.