It's interesting that Mike's Historic England link in post #197, emphasises possible HE support for the purpose of protecting the historic fabric and/or where there is a structural need. And any application must be for work that needs to be done to reduce the risk that the property faces or to enable the risk to be reduced.
This gives me hope ! This building qualifies on several counts, if HE can be persuaded (that is, after the current HE supported survey and a plan of works prepared). Even if further support is given to simply reduce the risk, it's a step in the right direction.
I think the fact that the City coffers are empty, helps the Golden Lion's case. There's absolutely no way the Council will throw money at it now, after all these years. So it's down to others to pick up the project if they really want to preserve a significant historic building. The pressure's on.