I am looking for travel options for something I'm writing. Costs are no real impediment, and the quickest options are better. And how long it would take would also be appreciated if you have some idea. Thank you in advance!
Depends what the Londoner wanted to see of the World. If the job was to get there as fast as possible they would take a ship to Saint Petersburg, then take a train to Moskva and use the brand new Trans-Siberian Train (finished in 1916). The train today takes 144 hours after schedule from Moskva to Valdivostok and then continues to Pjongjang.
An alternative way to Moskva from London would be using the different train services of Europe, France, Germany, Poland, Belarus and Russia. Considering different services, eventually unsynchronized schedules or post war quarrels and damages could take way longer than a ship this shortly after the war. (WW1 ended last year).
Hi there - we're happy to approve your question related to your creative project, and we are happy for people to answer. However, we should warn you that many flairs have become reluctant to answer questions for aspiring novelists and the like, based on past experience: some people working on creative projects have a tendency to try to pump historians for trivia while ignoring the bigger points they were making, while others have a tendency to argue with historians when the historical reality does not line up with what's needed for a particular scene or characterization. Please respect the answers of people who have generously given you their time, even if it's not always what you want to hear.
Additionally, as amazing as our flair panel is, we should also point out that /r/AskHistorians is not a professional historical consultation service. If you're asking a question here because you need vital research for a future commercial product such as a historical novel, you may be better off engaging a historical consultant at a fair hourly rate to answer these questions for you. We don't know what the going rate for consultancy work would be in your locality, but it may be worth looking into that if you have in-depth or highly plot-reliant questions for this project. Some /r/AskHistorians flairs could be receptive to working as a consultant in this way. However, if you wish for a flair here to do this work for you, you will need to organize this with them yourselves.