Callum Coombes (Calco)

Callie comprises of a free-to-use app, a beautifully wearable "safety bracelet" and a 24/7 ADT-powered monitoring service.

Callie keeps people safe every day when they're exercising, commuting, travelling, or when they're on dates and nights out. With Callie, you simply input what you're doing and how long it will take and your session is instantly shared with friends and family.

If you don't check in as safe before your time limit, an alert is sent out to your friends and family so they can check to see if you need help. Alternatively, Callie's 24/7 monitoring team are available to help you get to a safe place or to liaise with the emergency services on your behalf.