Cheap and reasonably convenient
Can be dirty and uninviting
Cheaper than the Tube
Not very reliable
superb value for money, great guides, ticket lasts...
Cheap as chips, improving by the day
Traffic, difficult if you are not a londoner
Cheap and mainly reliable
Usually reliable, handy bus.
Crowded at peak times
Cheap, less hassle than tube, more comfortable tha...
can get confusing, not always reliable
reasonable fares.Good routes.Frequent service
Slow during peak hours
can be very slow
none really unless you can't walk, ride a bike or ...
too many to write here, read my message
crowded, smelly and hot
Buses are great for obscuring peoples veiw.
I won't waste my breath
Too much duplication of routes
cold, unreliable, unsafe