I'm not familiar with Tesco brand yogurts in terms of ingredients. You would have to check the label to see what they contain. In particular, look at the type of sweetener it contains.
To decrease bloating, you should avoid the following sweeteners:
Artificial Sweeteners
Erythritol
Fructose
Malitol
Mannitol
Sorbitol
Sugar alcohols
Xylitol
In addition to causing bloating, they can also make bloating, IBS with diarrhea, IBS with constipation, and general diarrhea worse
Since we are on the subject of yogurt, some yogurt's (not sure if it applies to Tesco or not) use spices in their yogurts. The following spices can increase bloating:
Black Pepper
Chili Powder
Cloves
Hot Sauce
Ketchup
Mustard
Nutmeg
Onion
Tomato Sauce
Vinegar
In addition to causing bloating, these spices can make acid production worse and cause problems for those with GERD, Esophagitis, hernia's, and other related disorders.
I am going to keep this list going, even though I know the next category, vegetables, is not found in yogurts. Usually if you have bloating on a regular basis, a full diet change is necessary. Vegetables that cause bloating are:
All vegetables in the Cabbage Family
All vegetables in the Cruciferous Family
Arugula
Bok Choy
Broccoli
Brussels Sprouts
Cabbage
Cauliflower
Collard Greens
Kale
Kohlrabi
Rutabaga
Turnips
Also, some people with bloating, don't take kinds of fiber into consideration. Insoluble fiber is the best if you suffer from bloating, because it doesn't go through the digestive process and just goes through the entire digestive system without changing or breaking down. Soluble fiber is the opposite, it's digestion begins in the large intestine and it starts to bulk up which can cause not only bloating, but also cramping and really bad gas.
Soluble fibers to avoid if you experience bloating are:
Beta-Glucans
Guar Gum
Pectins
Psyllium
Other things to avoid:
Carbonated beverages - fill you up with air which causes cramping, gas, and bloating
Chewing gum - contains sugar alcohols, especially the sugar free kind, that can cause gas and bloating
Lactose - a type of milk sugar that will cause bloating, cramping, and gas
Sugary beverages - Kool Aid, most juice boxes, etc. They actually cause your insulin to surge, which then causes the increase of fat production in your abdomen and you wind up bloated
Trans Fats - increases bloating and gas. May be labeles as Partially Hydrogenated Oil or Trans Fat. Generally found in baked goods, commercially packaged snacks, and instant coffee
White Flour - contains refined carbohydrates which causes your insulin and blood sugar to spike and increases fat in the abdomen, which in turn causes gas and bloating.
I know it seems like everything is "off limits" but it's not. You can also look for foods and beverages that decrease bloating. Here is a list of those foods, beverages, and ingredients that are good to help control bloating:
Almonds
Apples
Artichokes
Asparagus
Avocados
Bananas
Beans
Berries (especially raspberries, strawberries, and blueberries)
Brown Rice
Cantaloupe
Celery
Cucumbers
Egg Plant
Eggs
Greek Yogurt
Kale
Kimchi
Lentils
Lettuce
Mackerel
Oatmeal
Olive Oil
Plain Yogurt
Rosemary
Salmon
Shrimp
Spinach
Tomatoes
Turmeric
Water with lemon in it (room temperature)
Watermelon
Whole Grain breads
I would be happy to provide you with the reasons these foods and beverages are great to prevent bloating, but I didn't want to give you information overload (maybe I already have!)
Other things to avoid:
Drinking straws - will cause excessive air, gas, and bloating