Three things you won't want to miss in London this Wednesday

1. Dulwich Picture Gallery's Tove Jansson retrospective opens today, showing the exceptional breadth and talent of the Finnish artist who brought us the Moomins over 150 works from satirical cartoons to surrealist inspired paintings from the 1930s. Be one of the first to see it. Entry is £15.50 for adults and free for children. 

2. Get on the dog and bone, gather up your mates and head to Little Nan's Broadway Theatre Saloon for a sing-a-long around the Joanna at their raucous Cockney Knees Up. Song books will be provided for the sing-a-long and pie and mash will be available for a tenner. See you pearly queens there at 7pm!

3. Celebrate National Honey Week by buzzing down to Honey Bee Day at St Martin's Courtyard. The courtyard will be a hive of activity with honey tasting, beeswax candle making and talks on honey production. You'll also be able to pick up a jars of the sweet stuff to make a donation to The British Bee Keepers Association.