Transco was a gas transporter, now called National Grid UK. British Gas sell gas and deal with related services on the customers side of the meter. British Gas used to be the world's biggest integrated gas company with business interests in 54 countries. It covered everything from drilling for gas to domestic appliances. Now it is just a few call centres staffed by those that didn't pay enough attention at school and a man in a van with a spanner and a U gauge.
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