On May 26, 12:51*am, lonelytraveller
wrote:
The post office railway goes from Paddington to Whitechapel with stops
at Oxford Circus, Rathbone Place, Mount Pleasant, and Liverpool
Street. It also passes along Oxford Street from the vicinity of Bond
Street.

The stop on Rathbone Place is very near the proposed Dean Street
"Western Ticket Hall" for the Tottenham Court Road station on
Crossrail.

Mount Pleasant is about 5 minutes walk from Farringdon, in the heart
of Clerkenwell, adjacent to the Thameslink and Circle/Met lines, in a
busy area which could do with a tube station.

The post office railway is disused.

Why didn't they just widen the tunnels and reuse them for Crossrail,
instead of digging hugely expensive new ones?

Because cash strapped Royal Mail are hiring them out to a Turkish
drugs gang.