On Wed, 09 Aug 2006 16:54:49 +0100 Jake D wrote :
Does anyone happen to know the annual gas consumption (in volume) of
the average gas-central-heated terraced house in England (or better
still, Southern England)?

Check out http://www.sedbuk.com/cost.htm - it will give you a cost in
£ and a price per kWh. A bit of reverse calculation will turn this
into kWh/year and your gas bill will give you the conversion to volume

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk