UPS are quite an arse about stuff like that (I work for a massive UK courier provider who integrate with them). Usually the sender has to ring them and ask to change address or arrange a collection, but half the time it will just add a day on because they'll be awkward about changing it all - it might already be loaded on a van for Monday
What I would do James is ring them and give them your mobile number and Freds number and ask them to put it on the delivery for the driver. The drivers are usually really good and if they end up in an industrial estate and can't find a unit they'll ring if they have a number