Thunderbirds are go!

To celebrate Thunderbirds Day, which celebrates 52 years of the iconic British TV series, we were joined by Thomas Brodie-Sangster, who plays character John Tracey in the current series Thunderbirds , and David Graham, who has played Parker since the original show.

Thomas is most famous for his role in Love Actually - and more recently in Game Of Thrones, but says being a part of Thunderbirds is a huge honour. He said: "I was a massive fan of the series as was my father. I had all the toys and the costumes, I loved it!"

David added it was an extraordinary feat that the show is still going more than 50 years after it first aired. "We thought it was something special but we had no idea 50 years later it would be this iconic show," he quipped.

David also surprised viewers but revealing his identity as the voice of another very famous children's TV character. Find out who in the video above.

Thunderbirds Are Go 5 is on ITV and CITV tomorrow at 8.30am.

The first annual Thunderbirds Day will take place on 30th September 2017, providing fans all over the world with a date to mark their love of the originalThunderbirds TV series as well as its new-generation revival Thunderbirds Are Go.

To celebrate the day, the following activations are taking place across the UK and London:

Vue Entertainment will be helping fans across the UK celebrate with a programme of exciting exclusive Thunderbirds Day screenings. This unique event, held at 2.00pm on Saturday 30in 52 venues nationwide (in honour of 52 years of Thunderbirds), will include a never-before nationally screened episode called 'The Abominable Snowman' shot in the Thunderbirds style of the classic series, filmed in Supermarionation and using audio recordings starring the original cast, followed by two brand new episodes of the hotly anticipated Season 2, Part 2 of Thunderbirds Are Go.