We use http://www.abelandcole.co.uk for food. They do deliver once a week, but with some planning and reoccuring orders you can pretty much automate your food supplies. Also they don't require you to be in - you can ask them to leave the boxes somewhere "safe" (behind a dust bin). Not ideal, and depends where you live, but we never had any problems in the last 4-5 years... Also they typically deliver quite early 5/6 am. Customer support is great. No monthly subscription. Cons: bit pricey, but I found the stuff to be of a better quality than in large supermarkets - they try really hard to be organic and stuff like that.