There are many apps and online tools to help you get around London smoothly. Transport for London (TfL) has two brilliant apps, the TfL Go app and the TfL Oyster and contactless app.
You can use the TfL Go app to plan your journeys with live updates to give you the easiest route possible. It allows you to preview your journeys and factors for accessibility such as step-free access. Not only can you use this app for the bus, tube, etc., but also plan walking and cycling routes easily too.
Simultaneously, you can download the TfL Oyster and contactless app to buy tickets and travelcards, top-up your Oyster card, check your journey history and more.
Sign up for TFL email updates like the Weekend Travel email to receive the latest information like service disruption that can affect your future journeys. Likewise, sign up for the journey alert email update, fill in your journey details and get emailed if your journey is going to be disrupted so you can plan a different route in time.
Alternatively, download Citymapper, a popular travel app that gets you around London and other cities across the world. Similar to the TfL Go app, you can check the live status of buses, Tube, etc. With Citymapper, you can plan journeys using private modes of transport too, like cabs and scooters, minimising any travel disruption with a wide range of options.