Is there a map showing the different stops for each company AND pointing at what to visit around each stop?
What is the best way to get a bus ticket? and where? thanks
I'm a bit confused: do you mean a double-decker bus *tour*, or just a double-decker bus? All public buses in London are double-deckers, so you could take an iconic red bus from basically anywhere to anywhere -- I'd recommend the app "CityMapper" to help you plan trips when you're there.
As for bus tours, I took one with my family that left from the Tower Of London -- we just took a train to Tower Hill Underground Station and crossed the street to meet the bus. They sell tickets right before you board, so all you need to do is find one of the guides directing people on to buses, and buy from them.
Here are some of the tour companies -- they have lots of pickup spots, so be sure to check the website for each:
Buy an Oyster card which you will use on all transportation (Tube, etc). It's much cheaper than buying single tickets — half the cost. There are double decker buses all over the city, you really can't miss them. Google for routes that use the iconic Routemaster style of buses. Also be sure the visit the London Transport Museum next to Covent Garden.
You can get around London using London transport's double decker buses using the Oyster or Travelcard, if you are referring to the hop on hop off, those are a private company and you have to buy a separate pass for it. They have a map on their website, here's one option
If you don't require the commentary, you can do it yourself with regular London buses, the last page of this link has a tourist bus map
The double decker tour buses are probably your best bet... They are hop on-hop off for a 24 hour period. They will give you the lay of the land, take you by all the major sites, and if you have a Rick Steves tour book, the Original Tour Bus will give a discount ( at least they did in 2005). You can ride the entire circuit, then get off at whatever caught your eye, then get back on again if you want.
The double decker buses are everywhere (they are the regular buses), the only thing you need is an Oyster card, you can get the Oyster card at every train and underground station. On the bus it will say the last stop and if you have a map you can see approximately where the buses go.
transport for London website, also i recommend the bus number 38 and 55, they are the new version of the classic route master.