3 off us including 4 month old and cat.
on an expensive week, cleaning products, mrs shampoo, cat food etc it can be around £80
we dont buy drink anymore since the baby came along this used to ramp the cost up loads.
key to a cheap shop is have a list and stick to it.
also we used to have seperate bank accounts, used to take out £40 each before the shop and then have money left over whcih was spent on crap.
make your own sarnies for work aswell as already stated, save loads doing this
were also in the pricess of buying all fruit n veg from local market as supermarket stuff is generally sh*te
cut down on meat aswell, price if meat has gone mental.