You're at liberty to challenge the above definition directly with the Environment Agency, but please don't peddle your pointless contradictions here, when the EA statement is perfectly clear.But if it is being "reused" then it is not "waste".
Do you know what a substance is?What the heck is "unwanted surplus substances " ?
Do you know what surplus means?
Do you know what unwanted means?
It appears that you do.
Cant be any of the pipes & fittings that are being carried because at the time they are "wanted"