OK - if 133.07 will not be moving, I would suggest that something ought to be done about it, because at the moment it is potentially extremely dangerous.
I heard a forecast late last year that we are in danger of having a midair in the SE of England within 12 months. I think I know where I would put my money on it occurring! (but I hope and pray it won't.)
As FSO in my company, I am supposed to be proactive in promoting safety, safety-consciousness, and general safe practice.
Perhaps NATS should also be a little proactive in having something done in this and any other similarly congested frequencies before the statistics leap up and bite them in the bum?