Round trip or loaded miles?

When quoting on jobs do you use round trip mileage or loaded mileage? When I last did same day work, the company used to quote and charge round trip miles, as did those we worked with, whereas now it seems like a lot of companies charge loaded miles only. I'm not trying to find out anyone's actual rates, just interested in which way people quote their jobs.

Loaded mile is the norm. But if collection is a bit of distance then you should work out the mileage from your location, collection, delivery then back to your location. Total up the mileage, then split in half then times it by your rate, then add your vat. Cuts out some of the dead mileage. That how i do it anyway and had no complaints as yet

Thanks for sharing Darren - appreciate the advice, cheers.