But you won't eat all that in a week by yourself, surely? You'll also need to be careful not to waste anything and maybe use the veg that goes off the quickest first and other stuff later in the week.
The tom puree, siracha, lasagne, peanut butter, vanilla extract and spaghetti will last for longer for a start.
You can save a bit on things like tinned tomatoes and beans by only buying multipacks on offer.
If you're really strapped, then ditch the Actimel, total waste of money. Just buy basic Greek style yogurt in big tubs and use that for all yogurt needs.
You can also save a lot on things like fajita mix, by buying a basic set of spices like cumin, coriander, smoked paprika and using frozen prepared garlic. If you spend £5-10 on large Asian branded packs (in Asda look for the Asian section, rather than the main spice aisle, you'll get spices and tinned tomatoes, rice, pulses all cheaper) it will set you up for months, whereas you'll get through that amount in a few weeks using packet spice mixes.
On frozen veg, some things are cheaper, some not.
Green beans are cheaper frozen, as is prepared garlic and ginger. Not sure about the rest.
Aldi and Asda are good for 'super 6 type veg offers, so if you can be flexible with what you buy, that can be good. Also packs of peppers with a green one in are cheaper than the orange/yellow/red mix.