I am about to fit some external wall insulation and the gas meter is attached to the wall that is to be insulated. The fitters will insulate around the meter, but this will mean there will be a cold spot where the meter is. Would moving the meter a few centimetres from the wall to fit insulation behind the meter be a costly exercise. I see that if the meter is moved less than 1m I should contact a gas safe engineer rather than National Grid.