The weekend briefing: everything you need to know

1. Did you know it’s Open Garden Squares Weekend? That means, for the next two days, Londoners will have the chance to explore up to 230 historic green spaces, secret botanical squares and community allotments that are normally closed to the public. Stop by the City of London Information Centre in St Paul’s Churchyard to purchase your ticket.

2. Camden Town Brewery is celebrating the launch of its latest brew, Inner City Green, by giving away hampers full of beers and snacks over National Picnic Week. For a chance to secure some freebies, tweet @CamdenBrewery with your location and a reason why you deserve their new beer, and include the hashtag InnerCityGreen.  

3. Humphrey Bogart is coming to Peckham this Father’s Day for Time Out’s open-air screening of ‘Casablanca’. Enjoy incredible views of the London skyline while watching this ’40s classic from the rooftop of the Bussey Building. Here’s looking at you, kid.