MM,
Don't take it personally, but as an installer we don't just choose a boiler to fit because it looks good, we buy into the whole manufacturer set up, and I personally keep an eye & ear out for feedback about the manufacturers products, and their service back up.
I want to fit more of your products, I like your products and I explain that to my customers. We all know what the end user wants, a reliable product with good aftersales. I have to advise my customer which manfs use their own engineers as it's a selling point.
I used to fit a lot of Broags before they merged, they also had a problem using agents, and when there was a problem it could become protracted as it did on occasion. I now keep some spares of the most common faults, but can rely on Heat Team.
Also as a WBAI I have the support from WB.
As I have already said, I like your products, they are easier to service (strip down) than other models, technically and the build quality they are superior to other models. (I tell my customers this)
But I let my customers choose their boiler based on all the information I can honestly give them.
P.S do you have agents in the Notts/ S Yorks area or do you have direct guys? I have emailed your rep this question a few weeks back, but didn't get a reply.