For true reliability you’ll need to build directly in hardware, which is exactly what this map of the London tube system uses ... small chips handle the WiFi connection — it appears to ...

We even have cases where business owners say that across the street, they can have a superfast fibre connection ... That’s how complex London is.” Trevor Dorling, director of the Digital Greenwich ...

Transport for London (TfL) has just released an official Tube map showing the number of steps between stations in zones one and two, so you can plan how to sneak in some extra steps each day.