DO YOU HAVE A UK ISSUED EHIC FORM? IF SO, PLEASE READ THIS ...
Under new NHSBSA guidelines that have just come out, you need to renew your UK issued EHIC, as your current card can only be used up to 31 December 2020. This is good news, I think, as the new EHICs will no doubt verify that you have continued rights to use them under the WA.
You can make your application online - if you currently have a UK issued S1 it's a swift and straightforward process. you need to tick the box that says you have an S1, give your name, your address, your date of birth, a phone number (optional) and your email address. You'll get an acknowledgement that you've completed your application and an application number. You will receive an email acknowledging your application and then - presumably - your new EHIC-E.
Here's the link - just follow the simple instructions. It will take you quite literally 2 minutes.
Get healthcare cover for travelling abroad
(This only applies to the UK issued EHICs - if you have an EHIC issued by your host country it doesn't apply to you).