Featherblade (Flat Iron) Welsh Beef steak with chimichurri

• 2 PGI Welsh Beef flat iron steaks, surface scored lightly
• ½ tsp salt flakes
• ½ tsp coarse black pepper
• 1 tbsp

For the chimichurri:

• 1 bunch of parsley, flat leaves
• 1 bunch of coriander
• Small red onion, finely chopped
• 4 tbsp extra virgin olive oil
• 2 tbsp red wine vinegar
• 4 cloves garlic, crushed
• ½ tsp chilli flakes
• ½ tsp cumin
• ½ tsp sea salt