What's on for the March 17th-18th, 2018 weekend in London. St Patrick\u2019s Day Festival\u00a0(March 17th) - Free The London St Patrick\u2019s Day Festival lasts for a whole three days with the main parade on Sunday the 18th, attracting massive crowds of over 125,000 people. For guaranteed fun and rowdiness, follow the parade (complete with floats, marching bands and colourful showmanship) from Green Park via Piccadilly, and Whitehall before ending at Trafalgar Square where Irish-themed festivities continue. Insight Astronomy Photographer of the Year Exhibition\u00a0(March 17th, 18th and ongoing) - Free Look to stars, planets, nebulae and more at The Royal Observatory in Greenwich. This free exhibition celebrates the best astrophotography taken by photographers all over planet Earth. Vault Festival (March 17th - 18th) - From \u00a35 Catch the penultimate weekend of London\u2019s biggest annual arts festival featuring fringe and experimental theatre, comedy, acrobatics, spoken word, film, \u00a0podcast recordings cabaret and music. This weekend\u2019s line-up includes comedy from Kirsty Mann & Matt Hutson, Catriona Knox and original creative writing showcase Oofle Dust. London Beer Week 2018 (March 17th-18th) - \u00a310 The big weekend finale for beer lovers at London Beer Week. \u00a0Grab a wristband, and pub-crawl your way around The Old Truman Brewery (the London Beer Week Hub) and other participating pubs, bars and bottle shops. Move It UK (16th-18th) - \u00a317 in advance A dance and performing arts show on a grand scale, this event attracts individuals, performers, brands, schools and professionals to celebrate the dancing world. Saturday night is all about the Move It and Capezio Championships where 28 dance teams of all styles and ages will battle it out for the title of champion. BMW Tate Live Exhibition:\u00a0Ten Days Six Nights\u00a0(March 16th-25th) - Free The first of two weekends of the annual live exhibition at the Tate Modern. This year\u2019s event celebrates the work and influence of \u00a0American visual artist Joan Jonas. Ten Days Six Nights will feature performances by Jonas and other acclaimed visual artists and musicians. Daytime exhibitions and installations are free, but the evening performances are ticketed.