the old boys (fitters/service enginners) of BG are the best,heck who needs a computer to repair a 20 year old glowworm space saver.
I'll be honest I've found the older boys are the worst really struggling with some of the basics of even combis let alone steamers. The old guys tend to be sticking it out for their final salary pensions and struggle with how bad the job has got and are completely uninterested in additional training and qualifications. Chuck an old spacesaver at them and they may know it backwards but who wouldn't and to be honest the old boilers are getting thin on the ground. Just my humble opinion and there are some fantastic guys but the keen new guys are far superior after a couple of years.
I would say that the mentality of bg currently is fairly contemptable to their engineers but they are well aware they can quite easily train any joe off the street to replace their current workforce in a few months so don't expect or indeed gift any favours.