eyeinthesky..
No access to Ops Room was certainly the case when I visited a few weeks back. Good view of how it's all organised from the Gallery though.
We did visit the Simulator (which is the same as the Ops Room, only without live radar data to look at), and were given a very thorough look at the system and it's capabilities.
Very impressive I thought it was too (although, yes, some of the text is a bit small!)