There isn't a register. Following the sneaky editing of the gov't guidelines to include school support staff (the page says last edited in March, but it wasn't there originally), I'm officially a key worker.
The only way I could prove it in real life would be by showing my school lanyard with its photo ID card... that I printed off myself! (The ID printer is in my office at work).
For things like this online signup, the proper way to do it would be by cross-referencing your NI number, or by using the domain of your work email (as you can't get a .sch.uk address elsewhere, nor can you get a .nhs.uk, .police.uk, .gov.uk address elsewhere). There are two problems with this though - in their infinite wisdom, the Trust of which my school is a member has given everyone an Austrian email address, while students and pupils at unis, colleges and schools traditionally get .sch.uk and .ac.uk addresses too.
The NI number option seems to be the only decent one, validated with an ID card when you turn up (if you drive to a test). (For the private sector, companies would have to provide a list of staff / NI numbers for those deemed key workers).
Originally Posted by: Retron