Now I'm scared.

Britain's energy systems are no longer fit for purpose, according to leading members of the UK's best-known scientific academy, the Royal Society.

The group's vice-chairman, Lord Redesdale, said the UK would never reach its climate change targets unless it radically improved policies on existing homes.

He said: "A billion tonnes will have failed to be saved from domestic carbon emissions and this is equivalent to the CO2 pollution from Britain's aviation sector over the next 25 years.

"We can either heat our homes and have hot baths, or fly but not both. There really does need to be much tougher policies on reducing carbon emissions from the homes."

Their report says current government policy is not enough to pay for green technology...

"We have adapted to an energy price which is unrealistically low if we're going to try and preserve the environment"

I think this could well pay for itself soon.