I found a balanced flue exiting into a shed today, a bit of roof had been removed to allow the poc o escape!, on id ing the boiler, the custard produced 3 service records for the last 3 years proving it was a safe boiler!!!!!!!!!!!!!!!!! and the records were produced by a gas safe registered person, pity he wasnt registered to work on domestic boilers and the like, but he was registered to carry out fusion pipework according to gas safe!!!!!!!!!!!, still didnt stop him carrying out commercial and domestic work, installations and servicing,