Time Out has weekly events listings for all across London, publishes a weekly magazine, and also has reviews and articles.
Meetup makes it easy for anyone to organize a local group or find one of the thousands already meeting up face-to-face.
All in London has theatre, film and culture listings as well as reviews of bars, restaurants and hotels, and online ticket booking.
Visit London is London's official visitor website and has information for visitors and locals about tourist attractions, events, getting around the city and places to eat and stay.
The Evening Standard's Going Out pages list upcoming events and attractions, exhibitions and shows, as well as reviewing bars and restaurants.
Do you live in Westminster? Are you over 65? The Out and About scheme for Westminster residents over 65 offers free tickets to cultural events such as concerts, exhibitions, film and theatre shows. You need to become a member of the scheme in order to receive tickets - registering is free.