These free measures are:

This particular scheme is aimed at home owners and private tenants.  To qualify you must be in receipt of a means tested benefit such as, housing benefit, council tax benefit or income support.  Alternatively if you are only claiming tax credits you must be earning less than £14,600 per annum.

To take advantage of this offer call 0845 602 4696 quoting "UNISON"

Most energy providers and social housing landlords offer similar government backed schemes and many local authorities have advice services to help save on bills whilst protecting the environment.