All weekend
FASHION PHOTOGRAPHY: It's your last chance to see English As A Second Language, showcasing the work of fashion photographers Hanna Moon and Joyce Ng. The exhibition presents a unique take on Western aesthetics and fashion ideals, and looks at the power that fashion photography has to shape our perceptions. Somerset House, free, just turn up, 27-28 April. While you're at Somerset House, why not check out the Sony World Photography Awards Exhibition and Earth Day events.
ARTISTS' OPEN HOUSE: A whole host of artists and designers based in SE19 open their doors for Crystal Palace Open Studios. Get an insight into how local painters, illustrators, photographers, ceramicists and jewellery makers work — and there's a chance to buy direct from the makers. Crystal Palace, free, just turn up, 27-28 April
CLASSIC CAR BOOT: Over 100 vintage vehicles park up in King's Cross for the Classic Car Boot Sale, with retro clothing, accessories, art, furniture, homeware and records being sold from the vehicles. Exhibitions, live performances, food and drink stalls and more make for a lively festival atmosphere. King's Cross, £5/£4, book ahead, 27-28 April
LOVE YOUR LINE: London Transport Museum opens its Acton depot — home to 320,000 objects not on display in the museum — for a weekend dedicated to tube lines. Love Your Line focuses on the architecture, design and human stories of the Victoria, District, Jubilee and Overground lines through a series of talks and creative activities. Museum Depot (Acton), £12/£10/£6, book ahead, 27-28 April
COMMUNE FESTIVAL: Hackney's Stour Space is under threat of closure if it can't raise £50k by the end of April — so Commune Festival is a fundraising event with local artists and music acts coming together to try to save it. Stour Space (Hackney), free, just turn up, 27-28 April
BEEKEEPING: Get your buzz on at this introduction to beekeeping weekend. It's open to anyone with apiarist aspirations, and comprehensively covers the theory and practical aspects of beekeeping in an urban environment. St Mary's Secret Garden (Hoxton), £150, book ahead, 27-28 April
FLEA MARKET: 30 selected traders are selling vintage goods at the Hackney Flea Market. Pick up furniture, art, homewares, records, textiles and more — but before you buy that armchair, think about how you're going to get it home on the bus. Abney Public Hall (Stoke Newington), free, just turn up, 27-28 April
WATERLOW ART PARK: Highgate's beloved Waterlow Park gets an arty makeover this weekend, as foundation art students from Central St Martins hold their show out in lush surroundings. Waterlow Park (Highgate), just turn up, 26-28 April
Saturday 27 April
DAWN CHORUS: If you can get yourself to Hyde Park for 5am (nope, not a typo), you're in for a treat. Join a dawn chorus walking tour and see the park's wildlife waking up for the day. Hear birdsong from blackbirds, wrens, chaffinches, robins, goldfinches, dunnocks, blackcaps and thrushes, and then witness the rest of London waking up from inside a private garden. Hyde Park, £10, book ahead, 5am-7am
MARY POPPINS RETURNS: If you missed this charming Disney blockbuster in cinemas at Christmas, there's another chance to watch it — and for a bargain price too. The rules at Family Film Club are strict though — all kids must be accompanied by adults, and all adults must be accompanied by kids. Make your own kite at a craft workshop before the film. Barbican Cinema, £3.50, book ahead, 10am
GREEN ROOMS MARKET: Pimp your pad with some greenery. Swing by Green Rooms Market to stock up on house plants and outdoor botanicals — even if you've only got a tiny space, you're bound to find a cactus or terrarium to fit. Dulwich Picture Gallery, free entry, just turn up, 10am-5pm
KEATS IN THE CITY: Discover the City locations linked to Romantic poet John Keats on a guided walk. See spots where he lived and studied, including Cheapside, Apothecaries’ Hall and Guy’s Hospital, interspersed with readings of his work along the way. Moorgate station, £10, book ahead, 11am
MASS MUSHROOMING: Learn how to grow your own mushroom at a free Earth Day workshop. Get an insight into how to care for your mushrooms, and take home a spawn bag to get you started. There's a chance to become part of a wider community of mushroom growers and report back regularly on the progress of your new fungi. Somerset House, free, just turn up, 11am-12.30pm
VAISAKHI: Join in with London's free Vaisakhi event — a celebration of Sikh and Punjabi tradition, heritage and culture — in Trafalgar Square. Witness dance, music and martial arts performances, take part in art and craft workshops, and try on a turban. Trafalgar Square, free, just turn up, 12pm-5pm
FAMILY STORYTELLING: Expert storyteller Vanessa Woolf of London Dreamtime hosts a spring-themed family session. Aimed at 4-11 year olds and their families, the event covers the tales of Echo and Narcissus and Why Dogs Chase Cats. Leighton House Museum (Holland Park), £3, book ahead, 2pm-2.30pm
WEIRD WALK: Faery and science, madness and ecstasy, take a walk through Arthur Machen's London. Part-tour, part-theatre, The Thin Veil of London takes you through the lesser-known corners of Holborn and Bloomsbury into other worlds. We've done this walk by Minimum Labyrinth, and can hugely recommend. £17.50/£12.50, book ahead, 3pm
NORTHERN JOKER: Comedian Justin Moorhouse performs his latest show, Northern Joker. It focuses on all the uncertainty in his life, from Brexit to his youngest child becoming a teenager and cancelling his Beano subscription. ArtsDepot (North Finchley), from £12, book ahead, 7.30pm
CLUB DE FROMAGE: If cheesy music is your thing, Club de Fromage is your ideal Saturday night. Classic pop and party tunes are the order of the day, with the focus on Beyonce and Rihanna tonight... oh, and it all takes place on an ice rink, so adapt your moves accordingly. Alexandra Palace, £10/£9, book ahead, 8.30pm-11pm
Sunday 28 April
LONDON MARATHON: Thousands and thousands of runners take to London's streets today for the London Marathon, following a 26-mile route from Blackheath to The Mall. If you want to cheer them on, take a look at the route map, and follow our tips for a good spot. Even if you're not involved, be aware of road closures across London for most of the day. Races from 9.05am
KILMOREY MAUSOLEUM: Normally closed to the public, Kilmorey Mausoleum is a Grade-II* listed, ancient Egyptian style monument, housing the bodies of the second Earl of Kilmorey and his mistress. Get a closer look at today's rare open day, which also incorporates an Environment Trust plant sale. Kilmorey Mausoleum (Twickenham), £3, just turn up, 10am-3pm
WHITEWEBBS: London's other transport museum has it's monthly Sunday opening today. Whitewebbs is home to vintage car parts, model airplanes, children's toy vehicles and motorbikes... and if they ask you if you want to see the well, just say yes. Whitewebbs (Enfield), £5 (cash only), just turn up, 10am-4pm
ANTIQUES FAIR: Bring your bargain-hunting game to the Adams Antiques Fair and browse more than 140 stalls of items from all over Europe, including furniture, posters, and decorative items. Royal Horticultural Halls (Westminster), £4, book ahead, 10am-4.30pm
HACKNEY FOREST: Join Paul Wood — author of London Street Trees — and Hackney Council’s street tree officer, Rupert Bentley-Walls, for a guided walk through 'Hackney Forest', seeing some of the borough's most notable and diverse arboreal offerings. Profits from the walk go to the Speaker of Hackney’s charities. Lower Clapton Road, donation, book ahead, 11am
OLIVER TWIST: From where Oliver is accused of robbing Mr Brownlow to the location of Fagin’s den of thieves, see some of the real London locations which inspired Charles Dickens when he was writing Oliver Twist on a guided walk. People he would have met, and events taking place at the time are also covered. Dickens Museum (Bloomsbury), £10, book ahead, 11am
SHADOW CINEMA: Before film was invented, shadow cinema was used as a method of storytelling. Learn some of the techniques involved in this interactive workshop, and storyboard your own ideas using light projection and shadowing. Design Museum (Kensington), £15, book ahead, 1pm-4pm
HOUSING CRISIS: What is causing London's housing market to dysfunction, and what can be done about it? Investigative journalist and housing campaigner George Turner talks about tactics used by property developers and surveyors to avoid their obligations to build affordable housing, and how it can be tackled. Conway Hall (Holborn), £8/£4, book ahead, 3pm
INTERNATIONAL DANCE DAY: Dancers from around the globe perform in a special International Dance Day showcase, with many different genres represented. Talks and networking also feature in the event, offering an insight into the lives and work of the distinguished dancers taking part. Rich Mix (Shoreditch), free, just turn up, 5pm
OLD SALT: Finish up your weekend with a gig on board a boat — albeit a dry-docked boat. Music collective Old Salt perform their gritty folk music to promote their new album Commons, released next month. The Golden Hinde (Borough), £7.50/£10, book ahead, 7.30pm
