Yes, you can can collect the race number of another runner at pre-registration only. To facilitate this, please bring a letter signed by the absent runner authorising you to collect on their behalf. It's essential that every runner gets the race number assigned to them - do not mix them up! (If you do, the results will be wrong!). So if you're collecting two or more numbers, write the names of the people they are for on the back as you collect them.
Runners must collect their race numbers in person on race day.