Not good enough.
Your local council needs to inspect any premises used for the disposal of vehicles. Obviously there are ways round it if you were prepared to do it on the sly, but expect a nice £10000 fine from EHS if you get caught, and believe me, someone WILL grass you up. You need to have the correct means of disposing of contaminents regardless of what state the cars in. You could break up a mint 58 plate porsche, and still get fined for 'unlicensed' disposal. There are strict laws regarding batteries, engine fluids, blake fluids ect. It cost us £20k+ to become licensed to dispose, and that was 11 years ago, but in doing that we can buy Cat B breakers.
Dont be clouded by thinking its a gold mine, its not. In 2002 we turned over £1.25 million in parts and salvage. Then the law changed, and the EU took over which made buying salvage and breakers near impossible. There will always be some Polish oik prepared to pay £0000 for salvage. If we hadnt bought the garage, we'd be long gone and stacking shelves at Asda.
To give you an example of how things have changed, in 2003, I paid £650 for a Cat B Uk TT 6 speed. In 2009, you cant get one for less than £3000.