Didn't the early Tornado ADV interceptors deploy with concrete in the nose as ballast, replacing the yet to be perfected radar?
It wasn't ballast, it was the Blue Circle radar system. By the time the ADVs were actually in squadron service it had been upgraded to Foxhunter anyway - the initial aircraft were all about developing tactics, training pilots, etc.
All that is necessary for the triumph of New Labour is for good men to say nothing whilst CGS.