It will either be that or your meter has developed a fault and is now running "fast".

Take daily reads of both your gas and electricity, over 7 days, at the same time each day and get in contact with your supplier, they'll then be able to investigate for you.

We are a typical family of four detached house. Our use of units used in the last year has doubled, could it be the fish tank, with the light, pump and filter. We are currently using 25 units a day. Don't use dishwasher or tumble dryer, have all energy saving bulbs. Help!