British Gas said gas usage rose by 5% despite the warmest December on record, as 2015 had more normal temperatures compared with a very mild 2014.

link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link
link

However, profits at its parent company, Centrica, fell by 12% to £1.46bn as wholesale gas prices fell sharply.