Bakerloo Line
The Bakerloo line, coloured brown on the Tube map, runs partly on the surface and partly at deep level, from the Elephant and Castle in south-east to Harrow & Wealdstone in north-west of London.
The line serves 25 stations of which 15 are underground. It is the seventh busiest line on the network.
Re-extension to Watford Junction
Over the next few years the northern section of the line may again see changes following the decision in February 2006 to transfer responsibility for Euston-Watford suburban services (the DC lines) from the Department for Transport (DfT) to Transport for London (TfL).
This is in conjunction with the reorganisation of North London Railways under London Overground.
It is projected that by 2026 the Bakerloo line would be re-extended from Harrow & Wealdstone to Watford Junction, restoring the pre-1982 service.
The railway line from Queens Park to Watford Junction, currently served by London Overground, would be served only by the Bakerloo line.