It's shocking to think that almost five million people in the UK are putting themselves and their families at risk by employing illegal gas engineers who aren't properly qualified to do the job.
Recent figures based on research by the Gas Safety Register, following four years of investigations into unqualified and unregistered gas fitters, showed that 65% of jobs carried out by illegal fitters were unsafe and that one in five of the appliances they fitted were so dangerous that immediate disconnection was required.