Supermarket scratch - repair recommendations (southend)

[Forrest1]

Hi all

Parked our defender in supermarket over the weekend and came back to see big long scratch on passenger door and a smaller one on to rear qtr panel. I assume someone walked past with their bag slung over their shoulder and did the damage

I’ve tried to polish it out but it’s a little too deep so probably needs some professional attention. Anyone got any recommendations for Southend/ Leigh on Sea areas

Thanks

?