http://informationotherwise.blogspot.com/2008/10/comment-unscrupulous-energy-utilities.html
I was interested to see these articles run on Guardian Unlimited recently (Maybe I should write for the Guardian?):
Energy firms press customers to sign up for premium-rate tariffs
http://www.guardian.co.uk/money/2008/dec/15/energy-providers-fixed-rate-tariffs
Watchdog tells energy firms to speed up price cuts
http://www.guardian.co.uk/business/2008/dec/17/ofgem-energy-companies-prices
Would still be interested to know more about these companies marketing strategies.