Which piece of tech in your pocket or bag would you genuinely struggle to live without?

Your bank, your map, your camera, your social life and your therapist all in one slab of glass. Lose it for a day and watch civilisation crumble around you.

The only thing standing between you and a chatty stranger on the 7:42 to Waterloo. A polite British way of saying 'please do not talk to me'.

It nags you to stand up, judges your sleep and turns a casual walk to Greggs into a closed activity ring. Surprisingly hard to ditch once you start.

Because nothing causes mid-afternoon panic quite like seeing 9% battery on the Tube. The unsung hero of every festival, train delay and dodgy pub plug socket.

A thousand books, zero dog-eared pages and no judgement when you're secretly reading romance on the Northern line. Sorry, Waterstones.