Engineer's Line References (ELRs)

Mileages

Last update 21 June 2025

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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.

NAJ Neasden South to Aynho Junction

NAJ2 Northolt and Ashendon Line

   0.00	Northolt Junction with ANL (10.15) and NAJ1 (0.00)
   0.07	SOUTH RUISLIP formerly NORTHOLT JUNCTION; S. R. & NORTHOLT JUNCTION
  (0.50)	RUISLIP GARDENS London Underground
   0.56	RUISLIP GARDENS
   1.68	WEST RUISLIP formerly R. & ICKENHAM
   1.78	connection to Ruislip depot London Underground
   2.61	Copthall Junction (future provision)
   3.27	SOUTH HAREFIELD formerly H.
   3.44	Denham East Junction with Denham East Curve (0.00)
   3.76	Denham West Junction with DEM (0.00)
   4.50	DENHAM
   5.42	DENHAM GOLF CLUB
   7.18	GERRARDS CROSS
   9.75	SEER GREEN formerly BEACONSFIELD GOLF LINKS; S. G.; S.G. & JORDANS
  11.41	BEACONSFIELD
  15.62	Gomme's siding
  16.11	Wycombe South Junction with WBB (33.68)
  16.29	HIGH WYCOMBE formerly W.
  17.14	High Wycombe goods depot
  18.48	WEST WYCOMBE
  21.27	SAUNDERTON
  21.76	divergence of up and down lines
  24.15	convergence of up and down lines
  24.40	PRINCES RISBOROUGH [2]
	PRINCES RISBOROUGH [1]
  24.48	Princes Risborough Junction with PRA (42.31)
  24.48	junction with PRC (0.00) and PRT/THA (0.00)
  27.16	ILMER
  29.74	HADDENHAM
  30.25	HADDENHAM & THAME PARKWAY
  33.55	Ashendon Junction with GUA (165.21) up line
  33.69	Ashendon Junction with NAJ3 (0.00)

Note that Ashendon Junction down line junction is on NAJ3