Last update 28 November 2023
Mileages are given in the form miles.chains unless stated otherwise. Figures prefixed with ≈ are approximate, those in parentheses are not on this route but are given for reference. Reference to 'start'/'end' of an asset are as read down the page.
23.667km/14.56 up line junction with HLL1 24.301km/15.08 down line junction with HLL1 26.285km/16.27 HEATHROW TERMINAL 5 Note that the station includes the term(Rail Station Only)on the National Rail Enquiries system. Note too that some systems include the whole of HLL1 in this line