Whizzkid Callum designs bedroom door lock he can activate from anywhere in the world

to figure out how things work. I know there is still so much for me to learn, which I am looking forward to.

“I would love to work as a freelance one day and travel the world. That would be the dream for me.”

Callum’s passion for computing began when he was just 10 and received his first computer from Raspberry Pi – an educational programme which encourages young people to get involved with computer science.

He said: “From there I started just making a few basic websites while I was still in primary school. I had always been interested in computers but didn’t really know how to do anything with it so this opened up a lot of doors for me.”

Callum went on to build his own server in his bedroom during his second year of high school and later built a flying drone. About 70,000 girls in the UK are waiting to join the Guides and Brownies because of a lack of volunteers. The charity Girlguiding have now begun a recruiting drive.