Valentino: Master of Couture, Somerset House

Fans of Valentino’s exquisite dresses will be in seventh heaven, as this new exhibition displays more than 130 of his stunning pieces. Not only will visitors walk along a specially designed catwalk to view gowns worn by the likes of Gwyneth Paltrow, Sophia Loren and Grace Kelly, but they will also learn more about the Italian designer and the painstaking process involved in creating one of his masterpieces. Tickets are £12. 29 Nov-3 Mar

Roman Festival of Light Celebrations, Guildhall Art Gallery and London’s Roman Amphitheatre

Head to the Guildhall Art Gallery and London’s Roman Amphitheatre for a free family fun day in celebration of Saturnalia, the ancient Roman festival which honoured the god Saturn. Visitors will make their own Roman-style hats, lanterns and mosaics before handling a selection of real artefacts which evoke the carnival spirit of this ancient winter festival. 12pm-4pm, 2 Dec

Great Christmas Pudding Race, Covent Garden

For the 32nd year teams will compete in this frenetic charity race around Covent Garden, in which participants must safely carry Christmas Puddings over a tricky but entertaining obstacle course. As well as enjoying the spectacle, onlookers can watch live entertainment and special guest appearances, or browse the area’s unique shops. 11am, 1 Dec

Jason Mraz at The O2

American pop/folk singer Jason Mraz brings his world tour to London for just one night, treating audiences to renditions of hits such as “I’m Yours” as well as tracks from his new album “Love is a Four Letter Word”. Mraz will be supported by the multi-talented English musician Gregory Page. Tickets are £37.25. 1 Dec

The Courtaulds at Christmas, Eltham Palace

Inject a bit of 1930s glamour into your Christmas at Eltham Palace, where you can experience the thrill of setting up a grand house for the festive season. Costumed characters will be roaming the building, and you can also get involved by singing carols and learning about period Christmas decorations. Tickets are £9.60, which includes entry to the house and grounds. 11am-4pm, 2 Dec