Buying a used truck, how do I get it back to the yard?

Assuming it is not loaded, not being and hasn’t been used for your business then getting it to base is just a delivery. Yourb1st I so can then be done- you might want to send it for a pmi as your first insp to cover yourselves. If you’ve already taxed it then trade plates wouldn’t apply anyway
Is this going onto a restricted licence by any chance.