The electric meter reads in kwh units. The gas meter is usually in cubic meters, multiply by 11.2 to convert to kwh. If your meter is in cubic feet, 1 cu ft is 0.028 cu m.
Hope you understood. But just to clarify, in case:
For an older imperial meter multiply the reading by 31.6. For a metric meter, multiply by 11.2.
That will be near enough for comparisons. The main factor that varies is the calorific value of the gas supplied and has to be in the range 38 to 41 megajoules per cubic metre, In my recent experience it has varied between 39.2 and 39.7.
and why are the meter budget targets in £ and the data for previous usage /day /month all in kWh? not particularly smart. Not so difficult to convert but shouldn't have to..