The Royal Brompton hospital has said it tried to avoid taking expensive legal action to keep open its children's heart unit. In a statement, the hospital's trust said it had been left with no choice:
"When serious assaults are made on patient care, when groundbreaking research teams who may be on the cusp of a significant breakthrough in cystic fibrosis tell us their research will not be possible under the proposals put forward, drastic measures are called for.
"We had to fight to protect the needs of patients - now and in the future. What better cause is there than the health of vulnerable children?"
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The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.