There are still government grants available for loft and cavity wall insulation for all GB households.
Grants of around 50% are there for the taking. According to a spokesman for the Energy Saving Trust, insulation is a 'no brainer'. At the prices you can get it for now, it will pay for itself in less than a year.
Please visit www.government-grants.co.uk for more information and to apply.
(Edit: Apologies for providing the wrong URL to the Government Grants website earlier.)