John Rowland:
There used to be hydraulic mains in London supplying pressurised water
all over the city ...

London Hydraulic Power Company, as it misleadingly says on the entrance
building to the Tower Subway. I didn't know that Underground lifts
were among the machines they powered, though. Thanks.
--

The original City & South London Railway lifts were hydraulic ones, I
don't know if they were supplied from that company.


Roger