Quick spray painting question

[rob1234]

I'm painting a small piece of trim (headlamp washer cover).

I have used Halfords plastic primer, then several coats of paints of Paints4U metallic blue.

My question is do I use 1200 wet and dry before the (Halfords) clear coat, or not?

Halfords clear coat can says 'yes', most of the internet says 'no'.

Thanks!