Thanks, I'll look at wayfair too.
Central market is absolutely amazing, but Randall's stocks baked beans, salad cream etc too, heb near me has a British section and I've heard that fiesta (the Mexican supermarket) sells uk stuff too. There a British shop is rice village, which is a bit pricey but sells everything british, even mr kiplings cakes, walkers crisps, squash, Crabtree and Evelyn toiletries (if that's your thing). World market also does a great range of uk (and German, Indian, Chinese, Korean, Swiss, French etc) foods, def worth checking out, can buy online too if there's not one near you.
I buy bread at Panera bread, which tastes much less sweet than USA supermarket bread, plus they slice it for me. There's a lot of sourdough bread around but my kids don't eat that..... Yogurt is a real bugbear for me as there are so many brands with chemicals I've never heard of in them. Sugar is in all yogurt (same as uk), otherwise it's just plain yogurt, but it's easy to make, just add fruit purees, honey etc. My kids like the organic yogurt in tubes (they get frozen and chucked into lunchboxes to defrost), siggi's is a good brand, less sugar too. It's a bit of learning curve, even after a year 
Getting on a flight back to houston in half an hour, been in Europe for a month and the kids are keen to get home, which is good. Always feel that leaving a place makes you appreciate it more, looking forward to getting back to polite and mannered people and clean streets after 2 weeks in paris......