Now lock 'em up!

The police in the UK have arrested 700 people on suspicion of serious crime. They have been taken as police intercepted encrypted messages sent by members of serious crime organisations. The operation is considered to be significant.
Now, the courts need to play their part. Defence lawyers, paid handsomely, will no doubt put up spurious claims based on human rights and similar but the courts should not shirk their duty and send these career criminals away for a long time.
Have we room in the prisons? If not convert the Nightingale hospital into a high security unit based on solitary confinement, no visitors, no telephones, no association.