Barbecued piri piri sardines with tomato and onion salad

Ingredients

• 12 ready-to-cook sardines
• 2 red chillies, deseeded and finely chopped
• 1 red bird eye chilli, finely chopped (optional)
• 4 garlic cloves, crushed
• 4 tbsp olive oil
• 2 tsp red wine vinegar
• ½ tsp paprika
• 1 tsp sweet chilli sauce
• 2 tsp dried oregano
• 1 tsp sea salt flakes
• 4 large vine-ripened tomatoes, sliced
• 200g pomodorino or cherry tomatoes, halved
• ½ red onion, thinly sliced
• 2 tsp torn oregano leaves
• 1½ tbsp red wine vinegar
• 50ml extra-virgin olive oil