In a large mixing bowl combine the tomatoes, cucumber, red pepper, shallot, garlic, olive oil, lemon juice, sea salt and pepper. Mix and let sit for at least 20 minutes for the flavours to meld. (The longer you wait the better). Stir occasionally.
Transfer ingredients to a blender, and blend on high until smooth. Chill for at least 2 hours.
Serve in bowls, sprinkled with fresh basil.
Notes
Gazpacho can be made in advance and will keep in the fridge for up to 5 days. Stir well before serving.Nutritional information is a rough estimate.