Place a steamer basket in a wide pan, fill with water to just below the bottom of the basket. Add the sweetcorn, season with salt, cover and cook over a medium heat for approx. 15 mins. until just soft. Remove and drain.
Place the cherry tomatoes and sweetcorn in a blending cup along with all the other ingredients up to and including the salt, puree until smooth, cover and chill for approx. 1 hr.
Heat the oil in a non-stick frying pan. Fry the reserved sweetcorn for approx. 3 mins. Plate up the gazpacho. Top with the sweetcorn, cherry tomatoes and basil, season. Serve with the yoghurt.