Aha! That explains why the banner on the walkway over the dual carriageway was no longer there this morning when I drove to work.
The problem with the Germania service from a potential passenger's point of view was that it wasn't a daily service and that the fixed price tickets were not particularly good value. A weekend in Berlin was tempting but the a return ticket cost £130 or thereabouts no matter how far in advance you bought it. Unless you leave it very late, you are unlikely to pay anything like that much on any RYR service or, indeed, BMI Baby or EZY.