While learning to drive a car and dealing with DSA set exercises, your driving school instructor would have mentioned the importance of looking behind the car if you are perfoming any reversing during a Maneuver on your driving lessons.
If you are a foreign licence holder wanting to pass the UK driving test in order to obtain a full British licence, then this is something that you are goint to need to work hard on doing before you go for your DSA practical car test. As a driving instructor, I've seen a lot of people with international licences who come to the UK, and they don't look behind but use the interior mirror when reversing during a maneuver. This is not safe according to the driving standards agency, and whether you agree with them or not because you have been driving for over 15 years and have never had an accident while using this technique, the point is you have to look behind the car when reversing if you want to pass the UK driving test.
The maneuvers that include reversing on the driving test are turn in the road, bay parking (left and right), reverse parking exercise, reverse round the corner (usually to the left, but it would be to the right if you do the test in a van with no rear windows).
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