If you have UK issued EASA licence, and are trying to get employment with a european airline, you may find that the job offers are few and far between.
Most european registered airlines are playing a wait and see approach to Brexit. However, they are proactively reducing employment of UK licence holders for obvious reasons. They are still interviewing and putting guys in pools, thats their legal obligation. But the amount of job offers going to UK issued Part licences has reduced significantly.