Citymapper: Best way transit app for London, with information on A to B journey planning, real-time departure info on all modes of transport where available, weather, alerts, disruptions and everything you need and may not even realise that you need to manage your life in this big city.

Tripomatic: This app/web version are perfect to plan tours of London. Click here to view.
Googlemaps and open street map (OSM): To know locations and reach places.

Accuweather+: For climate information

Thetrainline: Plan a journey and search for train times. View live departure boards. See train platform numbers. Buy tickets on the go Buy tickets for any UK train route.Purchase tickets up to 10 minutes before boarding. Save your preferred payment card details.Ticket collection