An interactive screening of the Rocky Horror Picture Show, an antiques fair and a general election hustings chaired by former Sun editor Kelvin MacKenzie are just some of the things featured in our top five this week.

1. Saturday - Rocky Horror Picture Show

Head to Camden High Street for a unique and interactive screening of The Rocky Horror Picture Show at Underworld Camden. If you’ve been to a Rocky Horror screening before you may have been told that you can’t throw rice or shoot water pistols, but you won’t have that issue here. The organisers say they pride themselves on being “the messiest, noisiest Rocky Horror screening in the whole galaxy of Transylvania”. You are welcome to bring your own props, or you can buy goodie bags on the night for £6. Goodie bags contain rice, newspaper, water pistol, glowsticks, latex gloves, noise makers, confetti, toilet paper, toast, party hats and playing cards. Starts 7pm. Tickets £12. Visit theunderworldcamden.co.uk/gigs to book.

2. Tuesday - Hustings

Two parliamentary candidates for Finchley and Golders Green will answer your questions and be grilled on their policies. Former editor of The Sun newspaper, Kelvin MacKenzie, will be chairing the hustings between Conservative hopeful Mike Freer and Labour’s candidate Sarah Sackman. Mr Freer is hoping to retain his seat, which he won at the 2010 election. Hosted at Ivy House in North End Road. Starts 8pm. To book a free place, visit jw3.org.uk or call 020 7433 8988.

3. Thursday - Book Launch

A book launch to celebrate the publication of novel Mrs Engels by Gavin McCrea will be hosted at South Hampstead School. From the bathing huts of Ramsgate to the hovels of Soho, from a surreptitious life in Manchester to a notorious one on the handsome new parade that is London’s Regent’s Park Road, the novel follows the Engels household as it “struggles to match its communist principles with its hunger for the high life”.Mr McCrea will be present to discuss his debut novel, about the mistress of Friedrich Engels, with Rachel Holmes, author of Eleanor Marx: A Life. Copies of both books will be on sale on the night. Runs from 7pm to 8pm. Held at South Hampstead School Library in Maresfield Gardens. Refreshments will be provided. RSVP by emailing molly@scribepub.co.uk or calling 020 3405 4218.

4. Sunday - Antiques Fair

International Antiques and Collectors Fairs Ltd (IACF), organisers of the UK’s largest antiques events, will be heading to Alexandra Palace. The fair is full of handpicked, quality, vintage traders who offer a wide range of genuine vintage and antique goods. Held in the Great Hall (Palm Court entrance). Doors open at 9.30am, closing at 4.30pm. Tickets £6. Visit alexandrapalace.com or iacf.co.uk for more information and for how to become a stallholder.

5. Saturday - Plant Sale

A variety of plants and shrubs will be on sale at the Plant Heritage Fair in Highgate. The horticultural market will feature numerous specialist nurseries. Held at St Michael’s School. Runs from 10am to 3.30pm. Email daisydogone@aol.com for more information.