The wife is moving from ottawa to vancouver to join me. She has some stuff to move (household bits and clothes mainly - no large furniture items), about 15 boxes in total.

She has been looking at the traditional house movers but quotes see high and reviews poor. Does anybody know of any cargo alternatives?

If the boxes are not large and not heavy, Canada Post, UPS or Fed Ex ground might be your best bet.

Sounds like its mostly clothes and light weight stuff, so any normal package courier could do it, FedEx and UPS take pretty heavy stuff as well.