..and as for some of the DIYers, they need shooting. I'm happy to help with repressurising and stuff like that, or "what does this flashing light mean" but "I changed a fan now my boiler won't work" just makes you want to scream.
Or politely say "please may I have your address, I'll come and fix it for you" and then send Corgi round.
BunSlinger
September 2008