can i just say the basic premis for soup is : good stock base, liquid and veg. You can make a tasty soup out of pretty much anything.
One of my favourites is carrot and lentil. So easy you don't need a recipe.
for 2 people, soften and onion and a chopped small potato in oil. Add 4 or 5 sliced carrots, 1/2 pint water, a bay leaf, salt and pepper. Add a generous handful of rinsed red lentils, simmer for around 10-12 mins until all veg and lentils have softened. Use a hand held blender til a smoothish consistency. Add any further seasning to suit.
You can add a little cayenne pepper to the simmering for a spicy version, or half teaspoon curry powder.
For carrot and corriander, use a veg stock cub with 3/4 pint of boiling water, and use corriander instead of cayenne. Add plenty of fresh corriander leaves to serve.
Use the basic onion, potato, water, stock for any veg soup which takes your fancy. Spiced parsnip is yummy, brocolli is gorgrous with a little stilton stirred in towards the end.
For tomato-based soups, omit the potato, and add uncooked pasta, and a variety of tinned beans...
Just have a play around, there is no great mystery about soup.