No, you're still not getting it. I'm servicing the bike, not them. I'm not paying £100 for something I can do myself in an afternoon (and what's more, enjoy doing it). And that's not to mention the appalling reputation surrounding Cannon's and my own 100% (!) negative experience with bike mechanics in general.
I'm not throwing my money at them, that's the entire idea of the thread. The work will be done by me, and they are unwilling to extinguish the light. I'm fine with that, my issue is finding out how to get rid of it given those are the circumstances.
My employer is hardly relevant, and happens to the be the NHS, although I'd hardly describe £110billion as "the odd scrap".