To make the dressing, whisk the olive oil, sweet chilli sauce, chopped basil leaves and 1 tbsp of the lemon or lime juice together with a sprinkling of sea salt and freshly ground black pepper. Alternatively, if you prefer a smoother, green-coloured dressing, you can whizz the dressing ingredients in a small blender. Either way, taste and then add more lemon or lime juice or seasoning if you want.
Separate the slices of ham and thinly slice the mozzarella. You can now set everything out on a serving platter, or on individual plates. Pile the rocket in the centre. Arrange a circle of ham round the rocket. Finish with an outer ring of overlapping mozzarella slices, then drizzle with the dressing. Grind some extra black pepper on top if you like, and scatter everything with the basil leaves.