Reducing condensation on the outside of double glazing

Due to the ever increasing cost of gas and electric the house is only heated in the room that is being used with the bedrooms not being heated at all during the night.The house has no central heating but a gas fire in each room with an electric oil filled radiator switching on in the bedroom 2hrs before getting up in the morning.
This situation causes the problem of cold windows, and even though they are double glazed condensation forms on them during the night,which require wiping down every day when the weather is cold outside. The picture below shows the problem of condensation on the windows in the morning.

 

Searching the internet on ideas to combat this problem I came across this product which is for application to single glazed windows as a cheap method of double glazing and draught proofing. I figured that this could be applied to my windows to prevent the warm air contacting the cold window so causing condensation.

 

So following the instructions below I fitted the film to my windows.

The picture below highlights the difference between two windows showing just one window with the film applied.

The picture below shows a view from inside looking out on a cold and frosty morning with both windows covered.

As you can see at the bottom of both windows there is slight condensation forming but this is on the outside of the film and not on the window itself.

So I was quite pleased with the result which allows me to look out on a cold winters day without having to wipe down the windows every time.