If the accusations against him were really false, the accusers deserve to be in jail considering the amount of damage they did to his career and his reputation.
Assuming the UK has similar enough standards of evidence to the US, cleared of charges is not the same as a false accusation. There just might not have been sufficient evidence to convict him. On top of that, they would likely need some strong evidence to bring charges for a false accusation (which they might not have).