Amarin Corp Plc (AMRN)

[CaptBeer]

To answer your first question: The exclusivity formula is 8 years + 2 years + 1 additional for each new indication.

first time New Drugs get 8 years
Generics can't be considered for two years after the 8 years expire.
1 year extra for each new indication

Your second question: The UK has agreed to adopt all the EMA rules and processes for two years beginning Dec. January 1, 2021.

https://remapconsulting.com/the-uk-will-follow-ema-regulatory-decisions-for-2-years-after-brexit-and-is-looking-to-speed-up-regulatory-access-in-the-longer-term/