hi Adam
to start with you need a waste carriers licence which you get from the environment believe it's around about £100 odd pound lasts for 3 years, depending on the waste that you are removing and whether you are using your own vehicles or skips
remember all electrical waste such as computers, t v's, fridges come under special waste and some tips may not take them, this can also be the situation with tyres, plastic, etc.
then you go onto hazardous waste such as abestos, sharps, feceas of any type, floucesent lighting, paint, the list goes on and go have a look on the environmental website for the correct info
contact your local landfil site for disposal price and what they will accept.
personally ourselves we use our own vehicles, but prices vary depending on where your tipping throughout the uk
good luck
Richie
by the way other than rubbish clearance you didn't say exactly what your doing
forgot to say certain green waste you cannot dispose of like japanesse knot weed with out informing the environmental