DX Group is reducing its number of repeat journeys due to an agreement with the Royal Mail enabling customers to collect undelivered parcels from their local post office.
The courier firm's B2C arm is in the second phase of a three-month trial of the scheme with 92 Greater London branches, but anticipates rolling out the service nationwide during August.
Mike Stone, chief operating officer at DX, says: "The problem with B2C is that people are not always home, so rather than clients waiting another day for us to return, or having to come out to one of our depots, we pay a small charge to Royal Mail for clients to collect locally at a post office.
"This saves us time and money and saves people coming to us, which we try and avoid because we are a private mail company."
Stone says the partnership benefits the Royal Mail because it will add traffic to counters and they will receive a payment from customers who collect the goods.
DX says up to 20% of its daily 60,000 movements have been going through the Royal Mail channel, and by the end of the year, 400,000 packages are expected to go through the service.
Parcelforce is the only other carrier with this arrangement with the Royal Mail; it has been in place since 2001.