Sure gathering add. evidence against BRK or Ryanair was also a part of the mission. But unfortunate the pilots are also liable and they will get their bill.
Sure, perhaps: but if they can establish, or it is established for them, that they had been an employee all the time, then they can claim for unpaid holiday pay, unpaid national insurance into the government pension etc. etc and that back claim can cover quite a few years. You can't have one without the other. Unpaid taxes is one thing, bogus self-employment is another. They are 2 quite separate issues and need to be treated differently.
This is the tip of a very sizeable iceberg. Much depends on how deep the authorities want to dive. It would be unjust if they stopped at the vulnerable exposed tip.