This is a simple guide on how to automate UK lights with a Shelly 1 by installing the shelly 1 relay into the ceiling pendant which has both permanent live, neutral and a switched live back from the wall switch.
These steps are from my own experience making my lighting "smart" but also user friendly (it works via a wall switch!). This simple guide will go through replacing an a normal ceiling pendant with one with room for a Shelly 1. If you have a ceiling light with a bigger base it's even easier.
Warning Electrical regulations must be followed by law. If you are not a competent person under the regulations do not attempt electrical work. https://www.diydoctor.org.uk/projects/electrical_safety.htm
This diagram has been taken from here and modified to include the Shelly 1.
![Wiring Diagram](https://camo.githubusercontent.com/c3f4bb33b248bf5cf483a5c20c317d876c95960e30f4911e1476e70af72cf554/68747470733a2f2f692e696d6775722e636f6d2f3678614c4744472e706e67)