From that you will see your MA2 can only be flown in subcategory A3 (>150m outside urban areas); or in subcategory A2 if you hold an A2 Certificate of Competency (>50m from uninvolved persons).
So whether your flight is legal depends on whether you are in a residential area, whether you hold the A2 CofC, and whether you can remain 50m horizontally from the uninvolved neighbour at all times.
The new rules don’t say anything about it being good to fly at a greater height, indeed the CAA’s guidance says the opposite. Lower down = safer. Higher up = less intrusive for privacy.