• The August Bank Holiday is upon us which means it’s carnival time! The Notting Hill Carnival kicks off this Sunday with an extravaganza of costumes, dancing, music and food. The carnival’s origins go back to the late Fifties and early Sixties (the exact date is somewhat controversial!) when it started as a way of Afro-Caribbean communities celebrating their cultures and traditions, drawing on the tradition of carnivals in the Caribbean. The carnival is now Europe’s largest street festival and this year’s parade signifies the start of a three year celebration in the lead-up to the Golden Jubilee year of 2016. The carnival kicks off at 9am on Sunday – children’s day – and the same time on Monday – adult’s day – and organisers say the procession should be completed by 7pm. For more, see www.thelondonnottinghillcarnival.com. PICTURE: Wayne G Callender/Notting Hill Carnival.

• A pop-up display of some of St Paul’s Cathedral’s treasures will appear today and tomorrow (Thursday, 21st August, and Friday 22nd August) in the cathedral’s crypt. Put together by Museum Studies students from Leicester University, the display will feature items relating to a royal event from each of the first three centuries of Wren’s church. They include images and objects from the Thanksgiving Service for the recovery of King George III in 1789 as well as items from Queen Victoria’s Diamond Jubilee in 1897 and the wedding of Prince Charles and Lady Diana in 1981. The display will be shown from 1pm to 2pm each day – entry is free via the cathedral’s north west crypt door. Meanwhile, the cathedral is offering a private, behind the scenes evening photography tour of the building for the winner of a photography competition looking for “the most surprising image” of the cathedral. The winner – and five friends – will also be treated to a meal at the Grange Hotel’s Benihama restaurant. The Surprise St Paul’s competition runs until 26th September and entrants just need to tweet or post their images to the church’s Twitter or Facebook pages with the hashtag #SurpriseStPauls. For more, see www.stpauls.co.uk.

• The National Gallery has made free wi-fi available throughout the building. The Trafalgar Square-based gallery says it’s now also welcoming visitor photography and is encouraging visitors to check in on Facebook and comment on Twitter using the hashtag #MyNGPainting. For more, see www.nationalgallery.org.uk.

• Fancy yourself a detective? The Museum of London and the BFI are asking for the public’s help in tracking down a copy of the first ever feature film starring the fictional character Sherlock Holmes.  A Study in Scarlet was released 100 years ago this autumn and was directed by George Pearson with then unknown James Bragington playing the part of Holmes. An adaption of Sir Arthur Conan Doyle’s story of the same name, it is based around Brigham Young’s trek across America with his Mormon followers and sees Holmes solve a series of murders. The film was made at Worton Hall studios and on location in Cheddar Gorge and Southport Sands in 1914. The organisations are seeking the film in the lead-up to the Museum of London’s landmark exhibition on Holmes which opens in October. If you do happen to find the film, you can write to Sherlockholmes@bfi.org.uk or make contact via social media using the hashtag #FindSherlock.

• A public ballot has opened for tickets to attend the art installation Fire Garden by renowned French troupe Carabosse at Battersea Power Station this September. The event – which will be held on the nights of Friday 5th and Saturday 6th September – is one of the highlights of Totally Thames, a month-long celebration of London’s great river, and is presented as a tribute to the power station before it’s closed to the public for redevelopment. A free event, it’s expected to be so popular that organisers are holding a ballot for tickets. The ballot closes midday on 27th August. To enter via the Totally Thames website, head here.

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