You can use this to your advantage in limited circumstances. On pilot I know employed his wife (who kept her maiden name) as his company secretary. When he decided he'd had enough and got another job and decided that as a contractor he was no longer contracting to RYR, they only had her number (a pay as you go number only for RYR use) and weren't too happy to be told that his services were no longer available.
As good of a story that is, no longer possible. For those who chose the contractor path, you have to engage with a Ryanair approved accountant who will put you as a director of an already existing company - a 'shell company'. You effectively loose all control of how your business is run.