you will be treated as a trader as you havnt owned the car for long enough and you are breaking for profit so be careful would be my advice as if you are caught you will face big problems, undeclared earnings, this can be back dated and with the forum as a trail easy to prove,
breach of enviroment laws as to the breaking of cars you must have a ELV licence or and exemption certificate and be able to prove that the cars you have in to break have allready been depolouted by a registared agent and you will be required to hold documented proof of this. then you need a waste carriers licence to take it to your premises and then you can dismantle the car inside a workshop but you can not store the car outside unless the gound has been treated even if its concrete allready.
then you need the shelll or whats left to be removed from a waste carrier again you will need to hold documented proof of this and then you get the destruction certificate for the car.
oh and of course you must be able to show documented proof of the disposal of oil. antifreeze, tyres batteries etc