Sorry Guest if the area is in full sun it is not facing north!

This does sound a little odd. I suppose it could be a fully exposed site. Full sun but good drainage? If so, almost any of the hebes, Mediterranean shrubs like cistus, then also lavender, rosemary, salvia officinalis in its various forms, pittosporum, teucrium fruticans, most conifers, buxus semp. 'Latifolia Maculata', and straight sempervirens, bay, - and the list goes on and on. Phil J

Does this sound like an exam question???

Yes it does

Sounds like an instruction, but not an exam question, surely - no exam would call a plant "a bush plant", it'd say shrub or perennial, etc. Northfacing would be in full sun during high summer, but in shade the rest of the year, unless its completely out in the open.