One of the many frequent complaints about Heathrow airport is the cost of travelling to the airport by train from London Paddington.
Whilst there is the option of taking The Tube, the journey on the Piccadilly Line (best described as one long baggage carousel) is long, prone to delays and over-crowding. The carriages are ill-suited to carrying large amounts of luggage and the overland parts of the journey are anything but scenic.
That only leaves (until Crossrail opens in 2018 at least) the Heathrow Express from London Paddington to Heathrow Central (for Terminals 1 and 3 and interchange to Terminal 4) and Heathrow Terminal 5. However, at a cost of £20 for a single ticket or £34 for a return ticket for a 15-20 minute journey (and more if you buy on board!), it must rank as one of the most expensive train journeys per minute in the world!