You are going straight ahead. Must you give way to a car approaching from the left and turning left?
Explanation
Here you are on the main road, and the car coming from the left is on the minor road. So it has to give way to you, no matter which way either of you is heading. You have priority.
KET reference: KET 154: At a junction of unequal roads, a driver on the minor road must give way to vehicles approaching the junction on the main road.