As such RYR are not recruiting crew from the U.K. at the moment because they rely on sending manpower across the network.
Also for those who are participating in business travel, there are different rules for each country.
It isn’t just 90 days and a visa run. You have to pay back 90 days (so for example if you do a trip to France from 1st Jan to 30th Mar, you cannot re-enter until around 1st July for all Schengen countries, not just one.
What are we gaining out of this? Some bloody fish.