Bus route N20 in London links “Barnet Hospital” and “Whitehall / Trafalgar Square”. This is a night route. The two directions are not quite the same: 2 stops are served in one direction only, which is worth knowing before you travel. The return journey starts at “Trafalgar Square” (200 m from “Whitehall / Trafalgar Square”).
Which way bus N20 runs
Towards “Whitehall / Trafalgar Square”: 74 stops. After “Barnet Hospital”, the bus calls at “Union Street Barnet”, “Barnet Church Wood Street”, “Barnet High St / Barnet Church”, “High Barnet Station / Meadway”, “High Barnet Station”, “Potters Lane”, “Barnet Everyman Cinema”, “Dinsdale Gardens”, “Lyonsdown Road”, “Walfield Avenue”. Then “Friern Mount Drive”, “Chandos Avenue”, “High Road Whetstone / Athenaeum Road”, “Whetstone High Road / Friern Barnet Lane”, “Swan Lane”, “Derwent Crescent”, “Finchley Park”, “Ravensdale Avenue”, “Tally Ho Corner”, “North Finchley Bus Station”. Then “Christchurch Avenue West Finchley”, “Granville Road West Finchley”, “Victoria Park (N3)”, “Long Lane Finchley Central”, “Finchley Central Station”, “Hendon Lane”, “East End Road Finchley”, “Holmwood Gardens”, “Manor View”, “Basing Way”. Then “East Finchley Cemetery”, “Ossulton Way”, “Trinity Avenue”, “Stanley Road (N2)”, “High Road East Finchley”, “Fairlawn Avenue”, “East Finchley”, “The Bishops Avenue”, “Woodside Avenue/Great North Rd”, “North Hill”. Then “Highgate Wood Fortis Green”, “Muswell Hill Road (N6)”, “Highgate”, “Southwood Avenue”, “Northwood Road”, “Langdon Park Road”, “Waterlow Road”, “Archway Station”, “Pemberton Gardens Holloway”, “Monnery Road”. Then “Tufnell Park Station”, “Lady Somerset Road Tufnell Park”, “Fortess Walk”, “Kentish Town”, “Kentish Town Post Office”, “Kentish Town Rd / Prince of Wales Rd”, “Royal Coll St/Kentish Town Rd”, “Camden Gardens”, “Camden Town Station”, “Pratt Street”. Then “Mornington Crescent”, “Silverdale”, “William Road”, “Warren Street Station / Euston Road”, “Capper Street”, “Goodge Street Station”, “Stephen Street”, “Tottenham Court Road Station”, “Cambridge Circus”, “Leicester Square”. Before “Whitehall / Trafalgar Square”: “St Martin’s Place”, “Trafalgar Square”.
On the way back the bus takes a different route, from “Trafalgar Square” to “Barnet Hospital” (73 stops). Only in this direction does it call at “Denmark Street”, “Warren Street Station”, “Euston Square”, “Euston Station”, “Euston Station / Eversholt Street”, “Aldenham Street”, “Camden High Street”, “Kentish Town Road Camden Town”, “Hawley Road”, “Prince of Wales Road”, “Fulbrook Road”, “Talbot Road / North Hill”, “Abbots Gardens”, “Church End (N3)”, “Dollis Park / Finchley Central”, “Woodberry Grove (N12)”, “Torrington Park”, “Athenaeum Road”, “Buckingham Avenue (N20)”, “Barnet Hill / Underhill”, “Barnet Church” and “Manor Road Barnet”. Only in the direction of “Whitehall / Trafalgar Square” does it call at, among others, “Barnet High St / Barnet Church”, “High Barnet Station / Meadway”, “Potters Lane”, “High Road Whetstone / Athenaeum Road”, “North Finchley Bus Station” and “Christchurch Avenue West Finchley”. For the way back, board nearby: “Barnet High St / Barnet Church” → “Barnet Church” (50 m), “High Barnet Station / Meadway” → “Barnet Church” (250 m), “Potters Lane” → “Barnet Everyman Cinema” (150 m) and “High Road Whetstone / Athenaeum Road” → “Athenaeum Road” (50 m). Towards “Whitehall / Trafalgar Square”, board nearby: “Denmark Street” → “Tottenham Court Road Station” (100 m), “Warren Street Station” → “Warren Street Station / Euston Road” (200 m), “Euston Square” → “Warren Street Station / Euston Road” (100 m) and “Aldenham Street” → “Silverdale” (250 m).
Left column runs down, right column runs up. Filled stops are served both ways, dashed ones only one way: 23 towards “Whitehall / Trafalgar Square” and 22 the other way. Tap a stop to see its name.
Other routes along the way
On part of the route, between “Camden Town Station” and “Trafalgar Square” it shares the road with route N29; between “Capper Street” and “Whitehall / Trafalgar Square” it shares the road with route N5; between “Camden Town Station” and “Stephen Street” it shares the road with routes N253 and N279.
Connections by stop, in route order:
- “Tally Ho Corner”: bus N263
- “North Finchley Bus Station” (only towards “Whitehall / Trafalgar Square”): bus N263
- “High Road East Finchley” (only towards “Whitehall / Trafalgar Square”): bus N263
- Stops from “Fairlawn Avenue” to “Woodside Avenue/Great North Rd”: bus N263
- “North Hill” (only towards “Whitehall / Trafalgar Square”): bus N263
- “Highgate Wood Fortis Green” (only towards “Whitehall / Trafalgar Square”): bus N263
- “Muswell Hill Road (N6)”: bus N263
- “Waterlow Road”: bus N263
- “Archway Station”: bus N263
- “Royal Coll St/Kentish Town Rd” (only towards “Whitehall / Trafalgar Square”): buses N28 and N31
- “Camden Gardens” (only towards “Whitehall / Trafalgar Square”): buses N28 and N31
- “Camden Town Station”: buses N28 and N31
- “Pratt Street” (only towards “Whitehall / Trafalgar Square”): buses N28 and N31
- “Mornington Crescent”: buses N28 and N31
- Stops from “William Road” to “Capper Street” (only towards “Whitehall / Trafalgar Square”): buses N73 and N205
- “Goodge Street Station”: bus N73
- “Stephen Street” (only towards “Whitehall / Trafalgar Square”): buses N1, N8, N19, N25, N38, N55, N68, N73, N98, N171, N207 and N242
- “Tottenham Court Road Station”: buses N1, N8, N19, N25, N38, N55, N68, N73, N98, N171, N207 and N242
- “Cambridge Circus”: buses N1, N19, N38, N68, N171 and N242
- “Leicester Square”: buses N3, N9, N15, N18, N19, N21, N26, N38, N44, N87, N89, N91, N97, N109, N113, N118, N136, N155, N199, N343, N550 and N551
- “St Martin’s Place” (only towards “Whitehall / Trafalgar Square”): buses N3, N9, N15, N18, N21, N26, N44, N87, N89, N91, N97, N109, N113, N118, N136, N155, N199, N343, N550 and N551
- “Trafalgar Square”: buses N3, N9, N11, N15, N18, N21, N26, N44, N53, N87, N89, N91, N97, N109, N113, N118, N136, N155, N199, N343, N381, N550 and N551
- “Whitehall / Trafalgar Square”: buses N3, N9, N11, N15, N18, N21, N26, N44, N53, N87, N89, N91, N97, N109, N113, N118, N136, N155, N199, N343, N381, N550 and N551
- “Denmark Street” (only towards “Barnet Hospital”): buses N1, N8, N19, N25, N38, N55, N68, N73, N98, N171, N207 and N242
- “Warren Street Station” (only towards “Barnet Hospital”): buses N73 and N205
- “Euston Square” (only towards “Barnet Hospital”): buses N73 and N205
- “Euston Station” (only towards “Barnet Hospital”): buses N73, N91 and N205
- “Euston Station / Eversholt Street” (only towards “Barnet Hospital”): buses N73, N91 and N205
- Stops from “Camden High Street” to “Hawley Road” (only towards “Barnet Hospital”): buses N28 and N31
- “Talbot Road / North Hill” (only towards “Barnet Hospital”): bus N263
- “Woodberry Grove (N12)” (only towards “Barnet Hospital”): bus N263
- “Torrington Park” (only towards “Barnet Hospital”): bus N263
Pages for these routes: bus N1, bus N136, bus N15, bus N155.
Passes and concessions
Tickets, passes and concessions are covered on a separate page: how to pay for public transport in London.
Questions and answers
Where does bus N20 start its return journey?
At “Trafalgar Square” (200 m from “Whitehall / Trafalgar Square”).
Does bus N20 stop at “Euston Station”?
Only in the direction of “Barnet Hospital”: in the other direction it does not stop there.
Where can I change from bus N20 to another bus route?
Most routes stop at “Trafalgar Square” and “Whitehall / Trafalgar Square” (N3, N9, N11, N15, N18, N21, N26, N44, N53, N87, N89, N91, N97, N109, N113, N118, N136, N155, N199, N343, N381, N550 and N551). All other stops with connections are listed above.
Checked on 3 October 2026. Source of the route and stops: Transport for London (TfL).