I obtained an EASA ATPL last year from the Danish authorities expecting to follow this path however on applying for my licence was told that this had changed.
I Was informed that in order to obtain an EASA FI I would have to complete a full FI course and my UK instructor certificate would not be recognised. The actual wording was:
We have been give new instructions from EASA:
We can give no credit for third country instructor ratings anymore.
Only credit for Teaching and Learning can be given if you have held an EASA instructor rating before Brexit
So sorry about this, please accept my apologies.
Hopefully things have changed back again but I'm not aware if anyone could point me in the right direction I'd also be grateful