£39 to check that a gas boiler is safe, and issue a certificate that confirms its safety???!!!! Who in their right mind would charge so little for a task that requires due dilligence. I have been picking up some inspections from a previous engineer who spent fewer than 10 minutes on each job. I know he didn't do it properly as some appliances failed. He charged at least £55. Now, who knows how long their engineer takes and whether he checked your boiler properly. If he spends a little longer and charges a little more, may I suggest he probably was more dilligent.