My personal experience is that trains are much quicker, less cramped, much more comfortable, more reliable, and easier to catch. The main downside is they are m

My personal experience is that trains are much quicker, less cramped, much more comfortable, more reliable, and easier to catch. The main downside is they are more expensive and can't offer local services (although trams and the tube are preferable to buses if the option is there). Since I don't drive I've been on plenty of coach/bus and train journeys, both long and short, and I can assure you given the choice I'd always choose train. This is particularly true for long-distance journeys: I wouldn't want to take the journey from London-Paris by coach again, but I've only had positive experiences taking the Eurostar and the TGV.