The promotional campaign for their new film continued in earnest on Tuesday as Benedict Cumberbatch and Elizabeth Olsen attended a photocall in London.

The co-stars were side by side as they posed in front of a suitably futuristic backdrop on Trafalgar Square, the latest pitstop as they promote forthcoming Marvel release Doctor Strange in the Multiverse of Madness.

Opting for a lemon yellow mock-neck beneath a chalk-stripe suit, leading man Benedict, 45, looked appropriately dapper as he greeted cameramen, fans and cosplayers at the central London landmark.

Joining the British star, Elizabeth, 33, caught the eye in a sequin-embellished waistcoat and high-slung trousers, teamed with a pair of strappy black heels.

The actress reprises her role as Wanda Maximoff in the new film, a character she previously played in Marvel’s Captain America and Avengers franchises.

Their forthcoming film advances the Doctor Strange story arc by focusing on his research on the Time Stone, his fascination with the chaos caused by the Multiverse and his battle with nemesis Dark Strange.

It’s understood that the film underwent six weeks of laborious reshoots, with cast and crew working six days a week on location in Los Angeles.

One source, played down the reshoots, telling The Hollywood Reporter: ‘Even while in the middle of production, Marvel is scheduling you for more shooting.’

Another added: ‘We’ve had bigger reshoots on other MCU movies.’

However, some insiders believe the scale of the reshoots is significant, explaining: ‘They’re here until the end of the year. That’s like a whole other movie.’

Recently speaking about the reshoots on Jimmy Kimmel Live, Cumberbatch said: ‘Like everything with Marvel, it comes in fresh, pretty much, most mornings. It’s really exciting and the film is shaping up to be something special.’

Meanwhile, Benedict previously revealed he wants his acting projects to be able to justify spending time away from his wife Sophie Hunter and their sons Christopher Carlton, six, Hal Auden, four, and Finn, two.

Speaking to Esquire magazine, he added: ‘I mean… I like a challenge. I really enjoy my work.

‘When I do work, I want to work hard. It has to be worth leaving my family and home for. To make them… Oh, this sounds weird but I guess to validate me not being there.

‘And if I can get away with a new skill and call it work, lucky me, you know? That saves me a few night classes or, you know, time I don’t have.’