Think a Key Post for London transport is needed! It keeps coming up as a question. - Right from memory...
1) As dereko1969 said, the bible for London transport is
www.tfl.gov.uk it covers all London transport options including walking, cycling, ferries, trains, tubes, trams etc. Transport for London is the umbrella body for transport and this is their public face.
2) Shop around when flying into London (check ALL airlines and airports). If you need to time your arrival somewhere (say you are expecting to get to a show in the West End) make sure you preference the airport with the best access to your destination.
3) In general London's airports are very well served by trains and bus transport. Check out each airports website for full details -I have only really used the trains so I know little about the coaches
4)
Heathrow tips:
- Both Aer Lingus and BMI fly here - check both.
- All flights from Ireland land into Terminal 1
- If you are staying in a hotel around Heathrow there is a Hoppa bus to the hotels but you are better off using the Public buses as these are free for journeys in the vicinity of Heathrow.
- Heathrow is in Zone 6 for the Tube and is on the Piccadilly line - it is about 50 minutes into the city on the Tube.
- Two trains run into London Paddington in Zone 1(on the Circle Line - yellow - which is in the top left-hand corner of Zone 1 on the tube map), the expensive and quickest option is the
Heathrow Express which takes 15 minutes and runs every 15 minutes for most of the day. The next option is the
Heathrow Connect, takes 25 minutes and runs every half an hour for most of the day.
- Heathrow station is on a spur line, trains only go to London.
- Consider Heathrow if you are heading to Knightsbridge, Earls Court or to the West-End and Oxford Street.
- For the flight back - it is quite a walk to the gates for flights to Ireland and you have to pass through additional security where your photo, taken before the baggage check area, is checked so leave enough time
- Transferring between Heathrow and Gatwick is a bit of a pain, the best option is to use the coach as train links all involve several transfers - not good with baggage.
5)
Gatwick tips:
- Aer Lingus and Ryan Air fly in here (Also Easyjet and FlyBe from Belfast).
- Flights from Ireland land in South Terminal
- The train station is located next to South terminal.
- The rail link between the two terminals is currently out of service, bus transport is provided instead but allow extra time
- Gatwick is outside of the travel area but you can buy a ticket in the station to cover both your transport in and travel around London.
- Trains from Gatwick (which is on the line to Brighton) travel to London Victoria or London Bridge (can also travel further north). Generally they take between 30 and 50 minutes depending on the number of stops and where they are travelling to.
Gatwick Express is fastest (by a pretty small margin) and terminates in London Victoria (on the Circle Line in the the bottom left hand area of Zone 1 on the Tube map).
- Consider Gatwick first for West-End destinations (several theatres are close to Victoria Station) and Central London.
6)
Luton tips:
- Ryan Air, Aer Arann and Easyjet fly from Ireland to Luton.
- Train station is a bus ride away - depending on traffic it could take 5-10 minutes. Catch the bus at the front of the airport
- It is on a main line to the North and the Midlands
- It is between 20 and 35 minutes to London, trains arrive into Kings Cross-St Pancra's (on the Circle Line at the top centre of Zone 1 on the Tube map).
- Choose Luton for destinations in North London or Central London.
7)
Stansted tips:
- Ryan Air predominate but Easyjet fly here from Belfast
- Stansted is further from London than any of the other airports (though Luton is only a little better) the train takes 45 minutes to get in.
- The
Stansted Express is the best train option into London, though you can try getting a connection at Stratford too.
- As with Gatwick you can purchase your travel card in Stansted also
- Stansted has reasonable train links to Birmingham and Leicester but best for Cambridge.
- Trains from Stansted (and from Stratford) come into Liverpool Street (on the Circle Line at the top right of Zone 1 on the Tube map)
- Choose Stansted for the City and East-End destinations.
8)
London City tips:
- CityJet fly here from Dublin
- Compact, quick and by far the closest to London itself - this is a lovely airport to use - shame it is usually quite expensive (though always worth checking just in case!)
- The airport is on the Woolich Arsenal branch of the DLR (Docklands Light Railway) and is in Zone 3.
- Trains run every few minutes to Bank or Tower Gateway (transfers to Canary Wharf and Stratford at Poplar)
- No longer has a mainline train link
- Choose City for Canary Wharf, City and East End or if going to the Excel centre (on the Beckton branch of the DLR - change at Canning Town)
- One little indulgence is that City Airport provide a free shoe-shine service in the Departures lounge to all passengers

- For those of us who can't keep away from AAM they also provide a free WiFi
9) London has a proper integrated ticketing system and travel cards will give you the full range of options. The
Oyster card is definitely worth investing in especially if you plan to be in London more than once a year. You can buy either a Travel card or an Oyster card and have it delivered to you in Ireland if you like - details at this link [broken link removed]
10) Try not to travel in London before 9.30 in the morning, not only is it less jammed on the Underground it will also make for a significant difference in your transport costs around London.