Indigo can now control zigbee bulbs!!
Wait, I thought it could already? Yes, but only with an expensive Hue hub, that was not compatible with the cheap zigbee sensors and switches.
This way you can use Hue bulbs as the extenders for zigbee network to reach the battery sensors, or save the money on the Hue hub and spend it on devices, which if you use Ikea bulbs or sockets or Aqara sensors, could go a long way..
If you already have a working Hue setup then the Hue plugin is great for that, but it does need a £50 hub and the hub doesnt support many of the various zigbee sensors that are available for a lot less money than the zwave equivalent.
If you dont have the hub and want to try zigbee bulbs or sockets, or the new sensors you can do for the cost of a <$10 USB stick. (the range on the cheap USB stick is pretty poor, you will need some bulbs or sockets to use as routers/extenders but these can be had for <£10 at Ikea .
I am happy with how these are working now so have unplugged my Hue hub and am calling these in production. I have also added the Indigo devices for my zigbee bulbs to Homekit and it actually sets the right colour, which I didnt get via the Hue plugin, so thank to Joe for spending the time ensuring the colour works correctly.
Its not quite plug and play, but nothing particularly complicated once you understand the concept of the MQTT Shims plugin.
Thanks again Joe.