There are special high filtration vacuum cleaners that you can get. We supply one from Numatic details as follows:
"The Numatic Sweepvac has been designed exclusively for the chimney sweeping industry - soot dust has now been proved to be carcinogenic, therefore a specialist hazardous dust machine is required. The machine itself is an adaptation of a standard hazardous dust machine and undergoes several changes before leaving the manufacturer. A cradle fitted to the head of the machine not only makes carrying the machine easier but also provides a location for winding the power cable when not in use. Grab handles are also fitted to the drum assembly and a tough wooden base is also standard. This machine can be used in most applications where dry hazardous material is to be picked up and is fitted with a hazardous filter module"
I cant see that you'd need much else other than a set of rods (from somewhere like B&Q) and some dust sheets!?
I dont recall ever having anything to do with a chimney sweep - either theres not many doing it because there isnt the market or there are a handful of chimney sweeps that are happy keeping it quiet
