Dear Mr P Jones
You may have heard that we're changing our prices. With reduced quantities of North Sea gas we now buy more energy on the global wholesale market. World events are pushing up these prices and distribution and network charges are also increasing. This is affecting all energy suppliers in the UK. Unfortunately, as a result, we have to increase our prices.
We're sorry to say this increase will affect you and your new prices will come into effect on 1st October 2011. You'll shortly receive a letter with details about the changes to your tariff so you don't need to contact us...
Meanwhile Vinay calls the collapse as "soon".