Home security is no longer a complex and expensive process thanks to Cocoon Labs.

Its Subsound technology detects infrasound – sound waves below frequencies detectable by the human ear – created by intruders and avoids false alarms through machine learning.

It has raised more than £5m, half from crowdfunding, and sold in more than 50 countries following its 2016 launch.

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.