That brings IN money for the railway. *It's not like it's an either/or
choice!
The figures quoted for mothballing are breathtaking. There again I
suspect maintaining a guard force on a property 500m long and 70m wide
in Central London requires a substantial number of staff 24/7 365
days. Add on top routine maintenance and you have a big bill, see
http://www.london-se1.co.uk/news/view/4284
OC