Coin meter is costing me £10 a day. What should I do?

OP, just watch the meter`s rotating ring or barrel as its known. That will spin faster when more electric is being used. You can see it in action when you boil a kettle and it will spin very fast. Switch off all your appliances, fridge/freezer,computer monitors, tv and try and track down what is eating the £1 coin at great speed.
If all your appliances are off, and that rotating metal ring is still spinning then possibly someone else has tapped into the supply