pull over on the right
This manouevre was introduced in 2018 as a shake up and modernization of the driving test to bring it into line with how people drive and park in the modern world. Obviously it is best practice to pull up at a safe place on the left and this is still the preferred choice when parking, however, it is not always possible so as well as being taught best practice your instructor needs to make sure new drivers:
know what factors to take into account when they decide whether or not to pull up on the right.
Are trained to carry out the manoeuvre safely and in appropriate places.