More of standard Steve Shaw:
You really don't get any of this, do you, Nigel? Yes

At the time of the raid, no-one knew whether the allegations were unsubstantiated or not. Surely the police knew that the allegations were not substantiated, otherwise there would have been an arrest, not just a search.

You're not even exercising hindsight here, are you? Yes, with hindsight I can clearly state that there was no further action brought against Sir Cliff.

The BBC were reporting a raid on a celeb's flat. At that time, neither you, the police nor the Beeb knew whether the allegations were substantiated or not. (see above)

The whole point of a criminal investigation is to find out whether or not a claim can be substantiated. And until it is the alleged perpetrator should not be hounded by the media. Once one allegation has sufficient evidence to make a successful prosecution likely then I can understand making the name known to see if others come forward, but not before.