Ok, I've done it- I don't think this would quite get us through a whole week but it would provide breakfast, lunch and dinner every day as well as juice.
I'm assuming a stocked spice rack, oil and sugar, tea and coffee.
This would make these meals
Chilli con carne,
Chicken, chips and beans
Pasta with sauce
Pasta bolognese x 2 nights
Pizza and chips and beans
Jacket potato with beans
1 Jacket Potatoes 750G £0.60
1 Market Value Apple Pack £0.90
2 Tesco Sieved Tomatoes Passata 500G £0.58
1 Tesco Garlic Each £0.30
1 Loose Red Onions Class 2 £0.25
1 Nestle Cheerios 375G £1.00
1 Chicago Town Edge To Edge Miami Meaty 430G £1.49
2 Tesco Baked Bean In Tomato Sauce 220G £0.50
1 Country Store Steak Cut Chips 2Kg £1.09
1 Casa Mexico Chilli Sauce 500G £0.69
1 Tesco Value Long Grain Rice 1Kg £0.55
1 Tesco Value Beef Mince 500G £1.50
1 Birds Eye 2 Crispy Chicken 170G £1.00
1 Warburtons Medium Sliced White Bread 800G £1.00
1 Robinsons Apple Blackcurrant Drink 1 Litre £1.00
1 Trattoria Verdi Fusilli Pasta 1Kg £0.99
1 Cravendale Semi Skimmed Milk 2 Litre £1.50
Basket Summary
Total Clubcard points 28
Total MultiBuy savings £0.00
Guide price (19 items) £14.94
Was an interesting experiment but I think that you'd need to add another £10 at least to cover all the extras such as tea, coffee, oils etc.... as they come up as well as butter and sandwich fillings (unless work lunches are not included?).