It means at least four. Furthermore, it might have expired since everybody with a valid FRTOL in March 2009 automatically received a four, which expired March 2012. (Somebody please correct me on those dates. I'm pretty sure they're not quite correct, although the gist of the story is.)
All thanks to the CAA not printing the actual level and the expiration date on the license.
Last edited by BackPacker; 6th October 2012 at 20:28.