Utilities

Alongside transport, heating and powering your home is by far the largest source of greenhouse gas emissions for the average household. Making the right decisions here can significantly reduce your impact.

Energy

Swap your electricity and gas supplier for one focussed more on renewable energy, but make sure you’re in the know about which are the greenest options and which are selling you brown energy disguised as green. 
Read blog post on this subject here.

Telecoms

Also under the heading of home utilities, you can switch your mobile phone provider to one that tries to make a difference.
Read blog post on this subject here.