Euston is the closest train station to the conference venue. It is well connected to the rest of London via the London Underground (the “Tube”). London has a number of airports, each of which has good transport links to central London. The easiest way to travel to Euston from the airport is to first take an overground train from the airport to a London terminal, and then to take an underground train from that terminal to Euston.
Tickets for overground trains can be purchased from a ticket machine at the overground train station. Tickets for underground trains can also be purchased from a ticket machine at the underground train station. However, with underground trains, you can also pay with a credit card, debit card, Apple Pay, and Google Pay, by simply tapping your card or phone at the ticket barrier.
To plan your travel, Google Maps works very well in London.