Dr. Paul McGowan:

On the point about the number of boilers, I have to make it clear that no verifiable statistics are available in respect of boiler sales. Informal surveys have been carried out. I reassure the committee that just because somebody bought a boiler and had it installed does not automatically mean it is faulty or a risk to him or her. It is not a situation that we want to happen but I want members of the public to be aware that gas is generally a safe product, provided a registered gas installer is used.