This is a very good deal, usually £29.99.
Works with/without the Hue Hub.
Wireless dimming - works straight out of the box. Enjoy smooth wireless dimming. The Philips Hue wireless dimming kit combines a clever wireless dimmer and a Philips Hue white LED bulb. No installation needed. Just place the switch anywhere you like and use it as a remote control for your Philips Hue lights,