MG MG3 Owner's Handbook Manual page 211

Transporter or Trailer with Rope
If your vehicle is to be transported on the back of a trailer
or transporter, it must be secured as illustrated:
Position the car on the trailer, apply the parking brake, and
place the shift lever in N position. Place the wheel chock
(1) as shown in the figure, then place the anti slip rubber
pad (2) around the circumference of the tyre.
EMERGENCY INFORMATION
Fit the lashing straps (3) around the wheels and secure to
the trailer. Tighten the straps until your vehicle is securely
held.
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