<P> The Central line is a London Underground line that runs through central London , from Epping , Essex , in the north - east to Ealing Broadway and West Ruislip in the west . Coloured red on the Tube map , the line serves 49 stations over 46 miles ( 74 km ) , which makes it the longest Tube line . It is also one of only two lines on the Underground network to cross the Greater London boundary , the other being the Metropolitan line . One of London 's deep - level railways , Central line trains are smaller than those on British main lines . </P>
<P> The Central line is a London Underground line that runs through central London , from Epping , Essex , in the north - east to Ealing Broadway and West Ruislip in the west . Coloured red on the Tube map , the line serves 49 stations over 46 miles ( 74 km ) , which makes it the longest Tube line . It is also one of only two lines on the Underground network to cross the Greater London boundary , the other being the Metropolitan line . One of London 's deep - level railways , Central line trains are smaller than those on British main lines . </P>
essex town used to house the terminus of the london underground
essex town used to house the terminus of the london underground
Epping , Essex
Epping , Essex