Hello from your local chimney sweep...
I am a professional, reliable and friendly local Chimney Sweep, I use clean dustsheets and a high-efficiency vacuum to ensure that sweeping is mess and dust-free. I recommend that chimneys are swept annually, or twice a year if you are using them often. Woodstoves, multifuel stoves and gas fires need sweeping annually. See www.tootsweep.com for my contact details.
Regards, Ian at TootSweep.