I'm not sure though niknak, it seems as though if there were no other factors, it could at least break even as a GA airfield, the quoted running costs in the report seem rather high.
However, as the report states, the developers have a lock on this one, as they are virtually certain to get the land in 2007 for £1. Anyone wanting to take on the airfield would have to buy them out of that lucrative option, hardly a likely scenario.
Another small but significant nail in the coffin for practical GA, and another blow to Sheffield's ambitions to compete with Leeds and Manchester as an international city. Yes, the writing has been on the wall for some considerable time, but that doesn't make the end result any more palatable.