You are not allowed to operate/instruct for anyone else without the permission of the contractor, i.e. Ryanair.
Not exactly a trade in which we can easily find some locum work anyway. An odd delivery flight every so often if you are lucky to know people. Instructors on the other hand maybe able to find additional work... but they're all flat out training cadets!
In fairness my contract was written in a time when everyone was doing close to 900 hours and is merely to prevent headaches arising from FTLs.