spots are not caused by dirt, eating chocolate or even living on fry-ups but by hormones, or more specifically, sensitivity to testosterone, which makes your skin oilier and more likely to clog up so...

1) Try over-the-counter anti-spot face-washes and toners (and don’t poke at or touch spots, that tends to make them worse)

2) If that doesn’t work, go see your GP, they will probably prescribe you antibiotic pills or lotions which ought to improve things

3) If that’s not helping, ask your GP to refer you to a consultant dermatologist