Taking tech to the classroom, Pobble allows teachers to find the best learning resources and gives pupils a global platform.

It is now the world’s largest bank of children’s handwritten work. After raising more than £1.5m from angel investors, its first international markets have been earmarked as Australia, UAE and Malaysia.

See more of our 101 tech start-up disrupters here.

And check out our 101 rising stars of tech - the exciting firms which did not make the main list but have the potential to grow.