It is thought that new legislation could be introduced to control the tariffs of household energy consumers who use pre-payment meters.
Mr Laidlaw said: "There is a worrying tendency towards short term fiscal interventions, or now from some quarters, even price controls for some groups of customers."
He added that such a move is "contrary to the operation of competitive markets" and could jeopardise the creation of an infrastructure in the sector.
British Gas is one of the six biggest gas and electricity suppliers in the UK.
The residential division of the company recently announced that its operating profits for last year stood at £571 million, a major increase from the previous year's figure of £95 million.
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