We've got an Ideal Classic gas boiler, probably as old as the house circa 2000.
Woke up this morning, no hot water. Couldn't get any warmth in the radiators either, so it seems it's the boiler.
There's a sight window on the front of the boiler where I presume I should be able to see the pilot light, but can't. Have tried the pilot light re-ignition routine in the boiler instructions, but there's no sign of life.
One gas engineer gave me some phone advice that he reckons it's most likely the PCB for about £300.
British Gas will do a one-off repair for £99 plus an ongoing annual agreement for £21 x 12 months; that would seem to be the most economic option. If it *IS* the PCB I might as well have a year's cover rather than pay the same amount for a one-off repair.