Conversation so far:
What were the buildings of the Broadmoor Hospital?
Much of Broadmoor Hospital's architecture is still Victorian, including the gatehouse, which has a clock tower.
Were the Broadmoor Hospital buildings rebuilt or renovated?
Broadmoor Hospital was built to a design by Sir Joshua Jebb, an officer of the Corps of Royal Engineers, and covered 53 acres within its secure perimeter.
Were the Broadmoor Hospital buildings separated by the type of issues patients had?
A new unit called the Paddock Centre already opened on 12 December 2005 to contain and treat patients classed as having a 'dangerous severe personality disorder'.
How many beds did the Paddock Centre have?
The Paddock Centre was designed to eventually house 72 patients, but never opened more than four of its six 12-bedded wards.

Question: Why were the others never opened?
Self-contained rewrite: Why were the other wards of the Paddock Centre never opened?