MM wrote:

Of course, the price of oil has since increased (latest price I have 42.27
pence per litre 16/Mar/2010), whereas the electricity went down last year
from 12.74 to 11.51 pence a unit.

1 litre of 28 sec. Kerosene = 10 kWH = 43p
10 kWH electricity = 115p

That's an impressive saving you're making there, bub, paying about three
times more to heat your home using electricity than the cost of using CH
oil.

The way that you are making savings is to heat less of your home. You
could reduce your bills further by turning off all the CH rads in the
rooms you don't use and by restricting your CH to the same times that
you use your electric heater.