Couple of questions about separation of metals from vehicles

We have large amount of cars pass though (5 a week)

They get fully dismantled atm so removing and separating parts is not a problem we just need to know what needs to go where.

Wiring Looms
We put all theses in one bin with all there plastic covers and fuse boxes and stuff still on them (is this a problem)



Alloy
We put all dirty alloy in a Irony Alloy Bin. ( radiators, Brackets With iron on them or plastic )

We also have a 'clean alloy' bin that alloy with out any iron or plastic goes in.
We are not sure if we should put cast alloy and 'normal, like bonnets' alloy together ?
also whats the prices for irony alloy, cast alloy and 'normal alloy' and alloy wheels ?

Motors.
We put Alternators, Starter motors In one box.
Should we also put Fan Motors, Heater Blower Motors, Wiper Motors,Fuel pump motors in the same box ?

ABS pumps ? Where shall we put these ? Motor box or irony alloy ? Or neither.

ECU's
they normally look like alloy case. Shall we put them in the Irony Alloy bin ?


Exhaust Manifolds - Cast Iron
Is it worth removing ? is the price much more than general Scrap Shell.

Wheel Weights
We remove all these and put them in a bucket when we remove the tyres.
I know there are lead, Zinc and Steel. We put them all in the same bucket what will this be weighted in as ?


Lambda Sensor
Theses come off the cats when we remove them, Is it worth putting them in a buckle (who in the UK deals with them and whats the price)

Thanks