The MGs sold in the UAE today are built by SAIC in China and are mostly young cars. That matters because many are reaching their first battery change right now, after two or three Dubai summers. The original battery is a sealed maintenance-free type, and its label lists the capacity and cranking current to match. The battery sits under the bonnet with clear access, so the swap is quick once the car has been tested.
Check whether your MG has start-stop before choosing a battery. If the engine switches off at traffic lights, the car was built with an EFB or AGM battery, and a standard one will not last in its place. Large touchscreens and cameras stay awake for a while after locking. A memory saver keeps the screen settings and clock. No coding is normally needed, and a scan tool is on hand if a model asks for a reset.