BBQ chicken with coleslaw

Name: BBQ chicken with coleslaw
Ingredients: 100ml/3½fl oz cider vinegar; 2 tbsp dark brown sugar; 1 tsp smoked paprika; 1 tbsp Dijon mustard; 1 tbsp dark soy sauce; ½ tsp sea salt and black pepper; 4 boneless chicken thighs, skin on; ½ small red cabbage, finely sliced; 2 carrots, coarsely grated; 1 small/½ large red onion, finely sliced; 8 radishes, sliced; 3 spring onions, very finely sliced; 2 limes, juice only; 2 tsp black onion seeds; 1 tbsp sunflower seeds; 1 tbsp pumpkin seeds; small bunch fresh coriander, finely chopped; small bunch fresh mint, finely chopped