Best Day Trips Out of London by Train. Enjoy days out to and from London by rail to some of the UK’s top destinations! Rail travel is one of the smoothest ways to travel and connects central London with fabulous locations! Take a day trip from London by rail and explore an entirely different part of the country or visit a new one! Stick to the fast-paced life with a one day train trips to and from london to cities such as Paris and Edinburgh or escape to the countryside with one of our Lake District day trips.