The only facts I could find on any BG websites are that £99 is an excess payment on a cover plan - and if BG customers fix their gas prices, then they get a reduction in plan premiums.
So you're suggesting that customers call in BG and take a chance on a £99 fixed fee, whatever the cost of the repair?
Estimates not being allowed of course, as obviously they would duck out if it turns out to be only a small thing.
But then what's to stop them getting a free estimate and assessment from an independent GSR, and then calling in BG if the job is going to be costly?
Doesn't quite add up, does it?