"Kev":
They were the last hydraulic lifts on the system.

(I'd better qualify that - the last 'proper'
hydraulic lifts, as opposed to some modern
electro-hydraulic installations on the DLR).

Mark Brader:
Okay, what's the distinction here?

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.
--
Mark Brader, Toronto | "*Nature*, Mr. Allnutt, is what we are put in this
| world *to rise above*." -- The African Queen