Underground Statistics 6
This Fact Sheet includes information on Average Train Speeds; Depôts; Depths (below ground and sea level); Distances; Electricity Supply; Elevation (heights above ground and sea level); Escalators; Lifts; Lines; Passengers; Pumps; Rolling Stock; Stations; Station Car Parks; Trains in Service; and Ventilation.
 
Average Train Speeds
Average scheduled train speed
(including station stops)
33 km/h
(20.5 mph)
Depôts
The main depôts on each Underground Line are:
Bakerloo Stonebridge Park
Central West Ruislip/Hainault/White City
District Ealing Common/Upminster
East London New Cross
Hammersmith & City and Circle Hammersmith
Jubilee Neasden/Stratford Market
Metropolitan Neasden
Northern Golders Green/Morden
Piccadilly Northfields/Cockfosters
Victoria Northumberland Park
Waterloo & City Waterloo
Depths
Maximum depth below mean sea level
Northern Line, just south of Waterloo station 
21.3m (70ft)

Maximum depths below ground level
Deep-level tube lines
Northern Line,Holly Bush Hill, Hampstead 
67.4m (221ft)

Sub-surface cut & cover lines
East London Line,Wapping 
18.29m (60ft)

Average depths below ground level
Deep level tube lines
24.4m (80ft)
Sub-surface cut & cover lines
7.3m (24ft)

Deepest station
Hampstead
58.5m (192ft)
Distances
Most distant places served Approximate distances 
from central London
km miles
(north) Epping  29 18
(south) Morden 16 10
(east) Upminster 29 18
(west) Amersham 43 27

Length of route run over

391

244
Length of route owned/managed
Single lines 14 9
Double lines 342 213
Triple lines 5 3
Quadruple lines & over 30 19
Totals 391 244

Length of route in tunnel
sub-surface cut & cover 32 20
deep level tube 139 86
Totals 171 106
Proportion of total route in tunnel 42%  
Longest continuous tunnel km miles
Northern Line, East Finchley to 
Morden (via Bank)
27.8  17.3
Longest journey without change
Central Line, West Ruislip to Epping  54.9 34.1
Longest distance between stations
Metropolitan Line, Chesham to Chalfont & Latimer 6.26 3.89
Shortest distance between stations
Piccadilly Line, Leicester Square to Covent Garden 0.26 0.16
Electricity Supply
Generating stations Installed capacity (MW)(megawatts) Fuel consumption for year therms - (000s)
Lots Road, Chelsea 180 3,566 (low distillate oil) 
79,840 (natural gas)
Greenwich Gas Turbine 103 369 (low distillate Plant oil) 4,681 (natural gas)
     
Total units used for Underground services 830 million 
(including units purchased)
Number of traction substations 237
Substations output voltage 630v DC
Nominal track voltage 630v DC
Elevation
Highest point above mean sea level
Metropolitan Line, beyond Amersham Station
150m (500ft)

Highest station above mean sea level
Amersham
147m (490ft)

Greatest elevation from ground level
Northern Line, Dollis Brook viaduct, over Dollis Road, Mill Hill
18m (60ft)
Escalators
Number of escalators
303

Station with the most escalators
Bank
15 (plus two sloped moving walkways)

Longest escalator
Angel Station
60m (197ft)
with a vertical rise of
27.5m (90ft)
Shortest escalator  
Chancery Lane Station,
9.1m (30ft)
with a vertical rise of
4.6m (15ft)
Lifts  
Number of lifts
64

Deepest lift shaft
Hampstead
55.2m (181ft)

Shortest lift shaft
Chalk Farm
9.3m (30.5ft)
For line statistics see the pages for each line
Passengers
Passenger journeys in 1998/99
866 million
Passenger kilometres in 1998/99
6,716 million
Pumps
Number of drainage pumps
782 pumps at 352 sites
Rolling Stock
Number of cars in the fleet
3,923
Surface stock
1,179
Tube stock
2,644
Stations
Served
274
Managed
251

Busiest stations
(passengers starting/ending journeys or changing between lines)
Oxford Circus
87.8 million
Victoria
87.7 million
King's Cross
66.6 million
Baker Street
44.9 million
Liverpool Street
44.6 million

Stations with the most platforms:
Moorgate
10
2 Northern Line
4 Metropolitan, Hammersmith & City and Circle Lines
4 Railtrack

Baker Street
 

10
4 Metropolitan Line
2 Hammersmith & City and Circle Lines
2 Bakerloo Line
2 Jubilee Line
Number of stations with car parks
65
Car parking spaces
11,400
Largest car park, Epping
599 spaces
Last updated November 1999