In a large frying pan heat up around 1tbsp cooking oil over a medium heat. Add in the red onions and cook gently until just becoming translucent. Add in the red pepper and baby plum tomatoes. Stir then season well with salt and pepper. Add the smoked paprika, garlic, cayenne pepper and chilli flakes along with the tomato paste. Combine together well.

Add in the tinned tomatoes, water and the sugar. Stir to combine. Bring to a gentle simmer. Simmer for around 10-12 minutes or until the sauce reduces down a little.

Add in the squid and simmer for another few minutes until the squid is cooked through and nice and tender. Don't overcook otherwise it'll be chewy.